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https://github.com/Calinou/awesome-gamedev

A collection of free software and free culture resources for making amazing games. (mirror)
https://github.com/Calinou/awesome-gamedev
List: awesome-gamedev
awesome awesome-list game game-development game-programming
Last synced: about 1 month ago
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A collection of free software and free culture resources for making amazing games. (mirror)
Host: GitHub
URL: https://github.com/Calinou/awesome-gamedev
Owner: Calinou
License: cc-by-sa-4.0
Created: 2015-08-20T20:09:21.000Z (over 9 years ago)
Default Branch: master
Last Pushed: 2024-03-26T22:00:32.000Z (9 months ago)
Last Synced: 2024-05-19T17:22:57.418Z (7 months ago)
Topics: awesome, awesome-list, game, game-development, game-programming
Homepage: https://notabug.org/Calinou/awesome-gamedev
Size: 275 KB
Stars: 2,273
Watchers: 90
Forks: 142
Open Issues: 5
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE.md
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README

        # Awesome Gamedev #

A curated list of good stuff related to the development of games. This list

contains *only* [free software][1] for code, sellers who aren't evil for

physical resources, and [free cultural works][2] for assets.

I have also provided a list of resources which are *not* free, and the reasons

why, in the associated Wall of Shame file.

This is released under a Creative Commons-Attribution-ShareAlike license,

version 4.0. You can find its text in the `LICENSE.md` file.

This project is part of [Peers][361] - a community for growing freedom. Support

us today!

## Table of Contents ##

* [Assorted Assets](#assorted-assets)

* [Audio](#audio)

  * [Editors](#editors)

  * [Music](#music)

  * [Sound Effects](#sound-effects)

* [Communities](#communities)

* [Engines](#engines)

  * [General](#general)

  * [HTML5](#html5)

  * [Physics](#physics)

* [Math](#math)

* [Fonts](#fonts)

* [Games](#games)

  * [C](#c)

  * [C++](#c)

  * [CoffeeScript](#coffeescript)

  * [Dart](#dart)

  * [ECMAScript](#ecmascript)

  * [Java](#java)

  * [Other/Multiple](#othermultiple)

  * [Python](#python)

  * [Scala](#scala)

* [Graphics](#graphics)

  * [Assorted](#assorted)

  * [Collections](#collections)

  * [Icons](#icons)

  * [Sprites](#sprites)

* [Graphics Tools](#graphics-tools)

  * [Animation](#animation)

  * [Bitmap Compression](#bitmap-compression)

  * [Editors](#editors-1)

  * [Mesh Tools](#mesh-tools)

  * [Spritesheet Tools](#spritesheet-tools)

  * [Texture Tools](#texture-tools)

  * [Voxel Editors](#voxel-editors)

* [Learning Resources](#learning-resources)

  * [Graphics](#graphics-1)

    * [Beginner](#beginner)

  * [Music](#music-1)

  * [Programming](#programming)

    * [Beginner](#beginner-1)

    * [Intermediate](#intermediate)

    * [Reference](#reference)

  * [Talks](#talks)

* [Programming Frameworks and Libraries](#programming-frameworks-and-libraries)

* [Utilities](#utilities)

## Assorted Assets ##

This contains collections of miscellaneous assets of different kinds.

* [Openclipart][288] - A giant collection of clip art. [CC0][289].

* [OpenGameArt.org][7] - A large collection of art intended for game

  development. Various licenses, including free ones.

* [Wikimedia Commons][97] - A collection of various assets of all kinds. Various

  licenses, all CC or free-er.

* [Open Source Game Clones][392] - A collection of open source videogames that

  are clones of old games.

## Audio ##

### Editors ###

* [Ardour][130] - The digital audio workstation. [GNU GPLv2][14] or later.

* [Audacity][33] - Software for recording and editing sounds. [GNU GPLv2][14] or

  later.

* [Beast][133] - Music composition and modular synthesis

  software. [GNU LGPLv3][38] or later.

* [Hydrogen][366] - An advanced drum machine, with a free drum kit

  included. [GNU GPLv2][14] or later.

* [LMMS][142] - A digital audio workstation. [GNU GPLv2][14] or later.

* [MilkyTracker][34] - Multi-platform application for creating .mod and .xm

  module files. [GNU GPLv3][23] or later.

* [Musagi][35] - A large and sophisticated music editor. [Expat][11].

* [MuseScore][422] - A music notation program capable of generating engraved scores and audio and MIDI files. [GNU GPLv2][14] or later.

* [rFXGen][391] -  a tool to generate sound waves procedurally. [zlib][45]

### General ###

* [GameSounds.xyz][413] - Royalty free music and sounds. Various licenses,

  including free ones.

* [Musical Artifacts][345] - A collection of music-related everything. Various

  licenses, all CC.

### Music ###

* [CC0 Music][385] - A collection of music. [CC0][289].

* [ccMixter][304] - A site for collaborating with musicians. Various licenses,

  all CC.

* [Creative Commons on Bandcamp][85] - Everything on Bandcamp under a

  CC-license. Various licenses, all CC.

* [Creative Commons on SoundCloud][98] - A Creative Commons collection on

  SoundCloud. Various licenses, all CC.

* [Free Music Archive][328] - An archive of free music. Various licenses, all CC.

* [Incompetech][294] - An artist providing royalty free music of all genres. [CC-BY-3.0][5].

* [Jamendo][287] - A site providing music licensed under the Creatives

  Commons. Various licenses, all CC.

* [LibreFM][96] - A big collection of stations, with fully-free music. Licenses

  allow downloads and reuse.

* [Musopen][31] - A site dedicated to copyright-free (and culturally free)

  music. Various licenses, all copyright-free (varies by piece).

* [Open Music Archive][295] - Digitized out-of-copyright sound

  recordings. Public domain in the UK.

* [Silverman Sound Studios' Music Tracks][368] - A bunch of musical

  tracks. [CC-BY-4.0][136].

### Sound Effects ###

* [Audioaugust][341] - A collection of sound effects, originally used for a

  game. [CC-BY-4.0][136].

* [Freesound.org][30] - A collection of CC-licensed sound effects. Various

  licenses, all CC.

* [jsfxr][290] - A tool like sfxr-sdl but in ECMAScript. [Unlicense][305].

* [Opsound][70] - A collection of assorted sounds. [CC-BY-SA-3.0][127].

* [sfxr-sdl][321] - A tool to generate sounds. [Expat][11].

* [SoundBible's Royalty-free section][32] - A collection of CC or

  public-domain-licensed sounds. Various licenses, all CC or public domain.

## Communities ##

Gamedev can be a lonely job, and it also can have a steep learning curve. These

communities are designed to assist you in terms of camaraderie, expert knowledge

and resources.

* [/r/freeculture][316] - Part of the Free Culture Reddit Community. A general

  free-culture-focused community.

* [/r/FreeGaming][94] - Part of the Free Culture Reddit Community. Designed

  specifically for discussion of free culture games.

* [/r/freesoftware][323] - A general free-software-focused community.

* [/r/godot][185] - A community for discussion and support in development with

  the Godot game engine.

* [FreeGameDev Forums][326] - A forum community for all things free-game-development-related.

* [FreeGaming][324] - A [freepo.st][325] community dedicated to free gaming.

* [Libregamewiki][327] - The free gaming encyclopedia.

## Engines ##

These are full-blown game engines.

### General ###

* [AGS][57] - Implemented in C++. Scripted using its own scripting

  language. Designed for adventure games. [Artistic License 2.0][58].

* [AlephOne][371] - Implemented in C++. Designed for FPS games. [GNU GPLv3][23]

  or later.

* [AnKi 3D][369] - Implemented in C++. [3-clause BSD][29].

* [Arianne][372] - Implemented in Java. Includes a multiplayer game

  framework. [GNU GPLv2][14] only.

* [Azul3D][112] - Implemented in Go. [3-clause BSD][29].

* [Backbone][161] - Implemented in ECMAScript. [Expat][11].

* [BananaBread][162] - Implemented in ECMAScript. A port of Sauerbrauten. [zlib][45].

* [Castle Game Engine][292] - Implemented in ObjectPascal. [GNU LGPLv2][102] or later.

* [Chili Source][262] - Implemented in C++. [Expat][11].

* [Cocos2d][75] - Implemented in Python. [3-clause BSD][29].

* [Cocos2d-android][263] - Implemented in Java. [3-clause BSD][29].

* [Cocos2d-X][306] - Implemented in C++. Has ECMAScript, Lua and C++ scripting. [Expat][11].

* [DarkPlaces][314] - Implemented in C. [GNU GPLv2][14] or later.

* [delta3d][373] - Implemented in C++. Also useful for

  simulations. [GNU LGPLv2][102] or later.

* [Doomsday][134] - Implemented in C++. [GNU GPLv2][14] or later.

* [Duality][77] - Implemented in C#. [Expat][11].

* [EasyRPG][208] - Implemented in C++. Designed for JRPG-style

  games. [GNU GPLv3][23] or later.

* [ENIGMA][308] - Implemented in C++. Has its own scripting language

  and [GUI editor][309]. [GNU GPLv3][23] or later.

* [FIFE][55] - Implemented in C++. Has Python scripting. Designed for isometric

  games. [GNU LGPLv3][38] or later.

* [Fillwave][374] - Implemented in C++. Has an easy graphics API. [FreeBSD][17].

* [Flambe][329] - Implemented in Haxe. Designed for 2D games. [Expat][11].

* [FLARE][54] - Implemented in C++. Designed for action RPGs. [GNU GPLv3][23] or

  later.

* [Fluxus][137] - Implemented in C++. Designed for livecoding

  worlds. [GNU GPLv2][14] or later.

* [Free Hero Mesh][432] - Implemented in C. Designed for turn-based grid-based 2D puzzle games. Public domain.

* [gamekit][293] - Implemented in C++. Scripted using C++, Lua or logic blocks. [Expat][11].

* [GamePlay][266] - Implemented in C++. [Apache2.0][20].

* [GDevelop][60] - Implemented in C++. Targeted at non-programmers. [Expat][11]

  (IDE is [GNU GPLv3][23] only.)

* [GNU FreeDink][47] - Implemented in C++. [GNU GPLv3][23] or later.

* [Godot][51] - Implemented in C++. Has [its own scripting language][52]. [Expat][11].

* [Gosu][318] - Implemented in C++. has a Ruby interface. [Expat][11].

* [Helm][83] - Implemented in Haskell. [Expat][11].

* [HERITAGE][123] - Implemented in ECMAScript. Designed for text adventure

  games. [GNU GPLv3][23] or later.

* [Horde3D][115] - Implemented in C++. [EPLv1][116].

* [ioquake3][202] - Implemented in C. A fork of the Quake III Arena

  engine. [GNU GPLv2][14] or later.

* [Irrlicht][43] - Implemented in C++. Has a [range of bindings][44]. [zlib][45].

* [JMonkey][140] - Implemented in Java. [3-clause BSD][29].

* [JNGL][430] - Implemented in C++. Designed for 2D games. [zlib][45].

* [kengine](https://github.com/phisko/kengine) - The Koala engine is a type-safe and self-documenting implementation of an Entity-Component-System (ECS), with a focus on runtime extensibility and compile-time type safety and clarity. [MIT][403]

* [KivEnt][307] - Implemented in Python. [Expat][11].

* [LambdaHack][84] - Implemented in Haskell, Designed for roguelikes. [3-clause BSD][29].

* [litiengine][417] - Implemented in Java, Designed for 2D games. [MIT][403]

* [lycheejs][89] - Implemented in ECMAScript. Designed for construction of HTML5

  or native SDL games. [Expat][11].

* [Maratis][311] - Implemented in C++. Has Lua for scripting. [GNU GPLv2][14] or

  later.

* [Moai][319] - Implemented in C++. Has Lua for scripting. [CPAL][320].

* [OctaForge][379] - Implemented in C++. Has LuaJIT for scripting. Fork of

  Sauerbraten. [NCSA Open Source License][380].

* [Ogre3D][41] - Implemented in C++. Has a [range of bindings][42]. [Expat][11].

* [OHRRPGCE][421] - Implemented in BASIC. Designed for 8/16-bit-like games like Final Fantasy.

  Has custom plotscript language for advanced scripts. An oldschool RPG Maker alternative. [GNU GPLv2][14] or later.

* [Orx][315] - Implented in C. [zlib][45].

* [Oxygine][176] - Implemented in C++. [Expat][11].

* [Panda3D][119] - Implemented in C++. Has a Python interface. [3-clause BSD][29].

* [PlayN][317] - Implemented in Java. [Apache2.0][20].

* [Processing][313] - Implemented in Java. Has its own scripting

  language. [GNU GPLv2][14] only.

* [Processing.js][314] - Implemented in ECMAScript. Has its own scripting

  language. [Expat][11].

* [qfusion][206] - Implemented in C++. Designed for FPS games. [GNU GPLv2][14]

  or later.

* [Ren'Py][107] - Implemented in Python. Designed for visual

  novels. [Expat][11], with some parts under [GNU LGPLv3][38] only.

* [SGE][387] - Implemented in Python. Designed for 2-D games. [GNU GPLv3][23]

* [SLUDGE][56] - Implemented in C++. Has its own scripting

  language. [GNU LGPLv3][38] only with the GTK Dev Kit [GNU GPLv3][23] or later.

* [Sly][344] - Implemented in Guile. Uses functional reactive

  programming. [GNU GPLv3][23] or later.

* [Solarus][375] - Implemented in C++. Has a Lua API and game editor. Designed

for Action-RPGs. [GNU GPLv3][23] or later.

* [Spearmint][203] - Implemented in C. Designed for FPS games. [GNU GPLv3][23]

  or later.

* [Spring][121] - Implemented in C++. Designed for RTS games. [GNU GPLv2][14] or

  later.

* [Torque2D][63] - Implemented in C++. Has [its own scripting language][62]. [Expat][11].

* [Torque3D][61] - Implemented in C++. Has [its own scripting language][62]. [Expat][11].

* [Turbulenz][277] - Implemented in ECMAScript. [Expat][11].

* [Urho3D][122] - Implemented in C++. Scripted using AngelScript or Lua. [Expat][11].

* [voxeliq][246] - Implemented in C#. Designed for voxel world games. [MS-PL][247].

### HTML5 ###

Unless stated otherwise, these engines are implemented in ECMAScript.

* [Akihabara][258] - Designed for 8-bit and 16-bit games. [Expat][11].

* [Babylon.js][260] - [Apache2.0][20].

* [Cocos2d-html5][264] - [Expat][11].

* [Coffee2D][205] - Implemented in CoffeeScript. [Expat][11].

* [Crafty.js][68] - [Expat][11].

* [Cube][168] - Designed for voxel games. [WTFPLv2][169].

* [kiwi.js][269] - [Expat][11].

* [melonJS][93] - [Expat][11].

* [panda.js][273] - [Expat][11].

* [Phaser][64] - [Expat][11].

* [PlayCanvas][65] - [Expat][11].

* [PuzzleScript][362] - [Expat][11].

* [Sprig][431] - [MIT][403].

* [Superpowers][357] - [ISC][358].

### Physics ###

* [ammo.js][259] - Implemented in ECMAScript. A port of Bullet. [3-clause BSD][29].

* [Box2D][48] - Implemented in C++. Designed to simulate rigid body physics. [zlib][45].

* [Bullet][59] - Implemented in C++. General physics engine. [zlib][45].

* [LiquidFun][396] - LiquidFun is a 2D rigid-body and fluid simulation C++ library for games based upon Box2D. [zlib][45].

* [Matter.js][91] - Implemented in ECMAScript. Physics engine for HTML5. [Expat][11].

* [ODE][117] - Open Dynamics Engine; implemented in C++. Designed to simulate

  rigid body dynamics. [Original BSD][118].

* [Oimo.js][272] - Implemented in ECMAScript. [Expat][11].

* [Physics.js][274] - Implemented in ECMAScript. [Expat][11].

* [Rapier][438] - Fast 2D and 3D physics engine for the Rust programming language. [Apache2.0][20]

## Math ##

* [Hypatia][416] - A pure-C math library for 2D/3D graphics (matrix, vector, quaternion) Seeks to be close to C89/C90 compliant for portability. [MIT][403].

## Fonts ##

* [Google Fonts][232] - A collection of freely-licensed fonts. [OFL][302].

* [Open Font Library][301] - A collection of freely licensed fonts. [OFL][302].

* [ParaType Public Fonts for Minority Languages of Russia][346] - Three

  freely-licensed fonts with support for many character

  sets. [ParaType Free Font Licensing Agreement][347].

* [The League of Moveable Type][303] - A collection of fonts with high

  standards. [OFL][302].

## Games ##

These are meant to serve as examples for your own work, or foundations to built upon.

I have endeavoured to provide both code and asset licenses here - if no asset

license is listed, assume it to be non-free or questionably-free. These entries

may be removed upon clarification.

### C ###

* [2048-cli][216] - A CLI version of 2048. [Expat][11] (code), no significant assets.

* [2048-in-terminal][217] - A CLI version of 2048. [Expat][11] (code), no

  significant assets.

* [Craft][226] - A 3D voxel world game. [Expat][11] (code and assets).

* [Curse of War][234] - A fast-paced strategy game. [GNU GPLv3][23] or later

  (code and assets).

* [The Legend of Edgar][214] - A 2D platform game with a persistent

  world. [GNU GPLv2][14] or later (code), various free culture licenses

  (assets).

* [FallingTime][196] - An arcade game. [GNU GPLv2][14] or later (code),

  various CC (no NC or ND) (assets).

* [Taisei][199] - [Expat][11] (code and assets), [OFL][302] only for one font.

* [Turtle Arena][204] - Third-person action game. [GNU GPLv3][23] or later

  (code), various free culture licenses (assets).

* [Wizznic][219] - A puzzle game. [GNU GPLv3][23] or later (code and assets).

### C++ ###

* [Battle for Wesnoth][244] - A turn-based strategy game. [GNU GPLv2][14] or

  later (code and assets).

* [Blackvoxel][225] - A voxel exploration and crafting game. [GNU GPLv3][23]

  or later (code and assets).

* [Clonepoint][193] - [GNU GPLv3][23] or later (code), various CC (no NC or

  ND) (assets).

* [colobot][233] - A robot-based strategy game. [GNU GPLv3][23] or later (code

  and assets).

* [Egooboo][210] - A 3D dungeon crawler in the spirit of

  NetHack. [GNU GPLv3][23] or later(code and assets).

* [Endless Sky][227] - 3D space exploration game. [GNU GPLv3][23] or later

  (code), various CC (no NC or ND) (assets).

* [Freeminer][228] - A 3D voxel world game. [GNU GPLv3][23] or later

  (code), [CC-BY-SA-3.0][127] (assets).

* [MegaGlest][250] - A 3D RTS game. [GNU GPLv3][23] or later

  (code), [CC-BY-SA-3.0][127] (assets).

* [Minetest][229] - A 3D voxel world game. [GNU LGPLv2][102] or later

  (code), [CC-BY-SA-3.0][127] (assets).

* [Minilens][360] - A cute puzzle platformer starring a cleaning robot on

  post-Apocalyptic Earth. Made with the Godot engine. [GNU GPLv3][23] or later

  (code), [CC-BY-SA-3.0][127] (assets).

* [Monster 1][212] - A JRPG-style game. [3-clause BSD][29] (code and assets).

* [Monster 2][213] - A JRPG-style game. [zlib][45] (code and assets).

* [OpenClonk][389] - A jump'n'run/settlement/combat game. [ISC][358] (code),

  [CC-BY-SA-3.0][127] at most but mostly [CC-BY-3.0][5] (assets).

* [OpenDungeons][236] - A version of Dungeon Keeper. [GNU GPLv3][23] or later

  (code), various free culture licenses (assets).

* [Return of Dr. Destructo][377] - An adventure game. [Expat][11] (code),

  [CC-BY-SA-4.0][125] (assets).

* [SavageWheels][198] - A car game. [Expat][11] (code and assets).

* [Seven Kingdoms: Ancient Adversaries][241] - A strategy

  game. [GNU GPLv2][14] or later (code and assets).

* [SuperTux][215] - A platformer. [GNU GPLv3][23] or later (code), various

  free culture licenses (assets).

* [SuperTuxKart][224] - A 3D racing game. [GNU GPLv3][23] or later (code),

  various free licenses (assets).

  (code), [CC-BY-SA-4.0][125] (assets).

* [The Powder Toy][231] - A sandbox falling sand physics game. [GNU GPLv3][23]

  or later (code and assets).

* [Übergame][356] - A multiplayer, casual FPS game. [Expat][11]

  (code), [CC0][289] (assets).

* [Warzone 2100][248] - An RTS sci-fi game. [GNU GPLv2][14] or later (code),

  various free culture licenses (assets).

* [Noiz2sa][428] - A classical vertical arcade shooter with an abstract theme and

  matching electronic music. [2-clause BSD][49] (code), no significant assets.

### CoffeeScript ###

* [coffee-snake][339] - A version of Snake. [GNU GPLv3][23] or later (code),

  no significant assets.

* [Zop][186] - A 'connect the dots' game. [Expat][11] (code), no significant assets.

* [2014's ABA Games][426] - [Kenta Cho][425] has created 50 games in 2014.

  ([git][427]). [MIT][403], no assets.

### Dart ###

* [Hauberk][190] - A roguelike. [Expat][11] (code), no significant assets.

* [Pop, Pop, Win!][183] - A version of Minesweeper. [3-clause BSD][29] (code

  and assets).

### ECMAScript ###

* [2048][172] - The original, classic casual game. [Expat][11] (code and assets).

* [A Dark Room][173] - A text adventure game. [MPLv2][166] (code), no

  significant assets.

* [Blockrain.js][177] - A version of Tetris. [Expat][11] (code and assets).

* [BrowserQuest][165] - An MMORPG. [MPLv2][166] (code), [CC-BY-SA-3.0][127] (assets).

* [Clumsy Bird][149] - A version of Flappy Bird. [Expat][11] (code and assets).

* [Drunken Viking][178] - A top-down puzzle game. [Expat][11] (code), various

  CC (no NC or ND) (assets).

* [Freeciv-web][167] - A port of Freeciv. [GNU GPLv2][14] or later

  and [GNU AGPLv3][27] or later (code and assets).

* [ludum-dare-28][180] - [CC-BY-4.0][136] (code and assets).

* [Masonry-JavaScript-Tetris-Clone][252] - Exactly what it says on the

  tin. [Expat][11] (code and assets).

* [Parity][181] - [Expat][11] (code), no significant assets.

* [Particle Clicker][359] - An incremental game that teaches the history of

  high-energy particle physics. [Expat][11] (code and assets).

* [Prism][184] - A colour-matching game. [Expat][11] (code), no significant assets.

* [Roguish][163] - A roguelike. [3-clause BSD][29] (code and assets).

* [Snake][157] - A version of Snake. [Expat][11] (code), no significant assets.

* [Sorades 13k][159] - A scrolling shooter. [CC-BY-SA-3.0][127] (code and assets).

* [Space Crusade][160] - A space game. [Expat][11] (code), [CC0][289] (assets).

* [Space Shooter][158] - Simple space shooting game. [Expat][11] (code).

* [Squirts][191] - [Expat][11] (code and assets).

### Java ###

* [epic-inventor][354] - An indie, side-scrolling RPG. [GNU GPLv2][14] only

  (code and assets).

* [Ned et les maki][221] - A 3D puzzle game. [Expat][11]

  (code), [FALv1.3][222] (assets).

* [Newton Adventure][220] - A puzzle game. [3-clause BSD][29] (code), various

  CC (no NC or ND) (assets).

* [Mindustry][439] - The automation tower defense RTS. [GNU GPLv3][23]

* [PuzzleGame][257] - A slider puzzle game. Uses Android port of Cocos2D

  engine. [Expat][11] (code and assets).

* [Terasology][230] - A 3D voxel world game. [Apache2.0][20] (code and assets).

### Other/Multiple ###

* [Cataclysm: Dark Days Ahead][207] - A roguelike set in a post-apocalyptic

  world. [CC-BY-3.0][5] (code), [CC-BY-SA-3.0][127] (assets).

* [DynaDungeons][194] - A version of Bomberman. Uses Godot

  engine. [GNU GPLv3][23] or later (code), various CC (no NC or ND) (assets).

* [FLARE][211] - A dark fantasy 2D RPG. Uses FLARE engine. [GNU GPLv3][23] or

  later (code), [CC-BY-SA-3.0][127] (assets).

* [Pioneer][239] - A space exploration game. Implemented in C++ and

  Lua. [GNU GPLv3][23] only (code), [CC-BY-SA-3.0][127] (assets).

* [Source of Tales][242] - An MMORPG. Scripted using Lua (implementation

  language unclear). [GNU GPLv3][23] or later (code), [CC-BY-SA-3.0][127]

  and [GNU GPLv3][23] (assets).

* [Tanks of Freedom][243] - Pixed-based turn-based strategy. Uses Godot

  engine. [Expat][11] (code and assets).

* [Teeworlds][200] - Implemented in C and C++. [3-clause BSD][29]

  (code), [CC-BY-SA-3.0][127] (assets).

* [Zero-K][249] - An RTS game. Uses Spring engine. [GNU GPLv2][14] or later

  (code and assets).

* [Haskell Games][429] - An index of Games written in Haskell. Various licenses.

### Python ###

* [Bullet dodger][383] - A fun and challenging mouse game where you must dodge

  bullets. [GNU GPLv3][23] only (code), various CC (no NC or ND) (assets).

* [Hexoshi][388] - Free-roaming Metroid-like. [GNU GPLv3][23] only (code),

  various CC (no NC or ND) (assets).

* [Mystic Mine][197] - [Expat][11] (code and assets).

* [ReTux][384] - A platformer. [GNU GPLv3][23] only (code), various free

  culture licenses (assets).

* [RogueBox Adventures][386] - A mix of classical roguelike and sandbox

  game. [GNU GPLv3][23] or later (code), various free culture licenses (assets).

* [Unknown Horizons][245] - A real-time strategy simulation

  game. [GNU GPLv2][14] or later (code), [CC-BY-SA-3.0][127] (assets).

## Graphics ##

### Assorted ###

This is a section for everything else that doesn't fit in some other graphics category.

* [Blender 3D Model Repository][296] - User-submitted 3D models made with

  Blender. Various licenses, including free ones.

* [Blend Swap][355] - A community of Blender artists and their work. Various

  licenses, all CC.

* [CanTree][10] - Free online tree generator. Generates PNG files. [Expat][11].

* [Kator Legaz 3D Models][297] - 3D Models by of various

  subjects. [CC-BY-3.0][5].

* [mocapdata.com][298] - A library of motion capture data. Various licenses,

  including free ones.

* [Poly Pizza][434] - Thousands of free low poly 3D models licensed under [CC0][289] and [CC-BY-3.0][5]

* [Yobi3D][13] - A search engine for 3D models that aims to display license

  information when possible. Various licenses, including free ones.

### Collections ###

This category contains any 'grab-bags' of different kinds of art assets.

* [Free stuff by 7Soul1][3] - A collection of various game-related

  assets. Available in PNG. Public domain.

* [openclipart][6] - A collection of various clip art. Available in PNG. Public domain.

* [Remastered Tyrian graphics][331] - A collection of pixel spreadsheets for a

  top-down shooter. [CC0][289].

* [Vecteezy][12] - A collection of vector art. Various Creative Commons licenses.

* [ZipUp Free Game Elements][363] - A collection of various graphical

  elements. Custom attribution license, free.

### Icons ###

* [FatCow][406] - A set of 3900 colour icons in 16x16 and 32x32 pixel format. [CC-BY-3.0][5].

* [Font Awesome][405] - A large set of vector icons. [CC-BY-4.0][136].

* [Game-icons.net][4] - A constantly-growing collection of black-and-white

  icons. Available in SVG or PNG. [CC-BY-3.0][5].

* [IconFontCppHeaders][412] - C and C++ headers for icon fonts [Font Awesome][405], [Material Design Icons][291] and [Kenney Game Icons][411]. [zlib][45]

* [Kenney Game Icons][411] - A font pack specifically designed for (browser) games and other gaming related websites/projects. [CC0][289].

* [Material Design Icons][291] - An official icon set from Google following

  specific guidelines. [Apache2.0][20].

* [Tango Icon Library][300] - An icon set project with a goal to create a

  consistent user interface. Public domain.

### Sprites ###

* [LPC Spritesheet Character Generator][395] - A pixel-art RPG-style character spritesheet generator. Arts are dual licensed : [GNU GPLv3][23] and [CC-BY-SA3][127]

* [SpriteLib][8] - A big collection of sprites. Available in PNG. [CPL 1.0][9].

## Graphics Tools ##

### Animation ###

* [Synfig Studio][104] - A 2D animation tool. [GNU GPLv2][14] or later.

### Bitmap Compression ###

* [FLIF][343] - Reference implementation of the Free Lossless Image

  Format. Comes with additional tools. [GNU GPLv3][23] only.

* [pngquant][16] - A command-line utility for lossy compression of PNG

  images. Has various front-ends available. [FreeBSD][17].

* [Trimage][18] - A cross-platform tool for losslessly optimizing PNG and JPG

  files. [Expat][11].

### Editors ###

* [Blender][25] - A 3D modelling and rendering editor. [GNU GPLv2][14] or later.

* [GIMP][22] - The GNU Image Manipulation Program. Designed for photo

  retouching, image composition and similar tasks. [GNU GPLv3][23] or later.

* [GrafX2][310] - A bitmap paint program specialized for 256-color

  drawing. [GNU GPLv2][14] only.

* [Hme][139] - A program for creating, manipulating and viewing height

  maps. [GNU GPLv2][14] or later.

* [Inkscape][24] - A vector image editing program. [GNU GPLv2][14] only.

* [Krita][108] - A digital painting and illustration program. [GNU GPLv2][14] or

  later.

* [MakeHuman][26] - A tool for making 3D characters. [GNU AGPLv3][27] or later.

* [MyPaint][81] - A natural materials painting and drawing

  emulator. [GNU GPLv2][14] or later.

* [ngPlant][105] - A 3D plant modelling software suite. [GNU GPLv2][14] or later.

* [NormalMapOnline][40] - An online normal-mapping tool. [Expat][11].

* [Overlap2D][19] - An engine-agnostic game level and UI editor. [Apache2.0][20].

* [Pixelorama][418] - 2D pixel art editor with animation support. [Expat][11].

* [Synfig Studio][104] - 2D animation software. [GNU GPLv2][14] or later.

* [Tiled][21] - Easy-to-use and flexible tile map editor. [GNU GPLv2][14] or

  later and [FreeBSD][17].

### Mesh Tools ###

* [MeshLabs][103] - A portable system for the processing and editing of

  unstructured 3D triangular meshes. [GNU GPLv2][14] or later.

* [Dilay][364] - A 3D sculpting application that provides an intuitive workflow

  using a number of powerful modelling tools. [GNU GPLv3][23] or later.

### Procedural Generators ###

* [SpaceshipGenerator][376] - A Blender script allowing generation of spaceships

  from a random seed and some parameters. [Expat][11].

### Spritesheet Tools ###

* [Piskel][15] - Online pixel art and animated sprite creator. [GNU AGPLv3][27]

  or later.

### Texture Tools ###

* [AwesomeBump][141] - A program that generates normal, height, specular or

  ambient occlusion, roughness or metallic textures. Requires a graphics card

  with support for OpenGL4 or greater. [GNU LGPLv3][38] or later.

* [Material Maker][419] - Procedural texture generation tool for use with PBR engines. [Expat][11].

* [NeoTextureEdit][37] - An easy-to-use, graph-based, procedural texture editor. No longer maintained.

  [GNU LGPLv3][38] or later.

* [TextureGeneratorOnline][39] - An online tool for texture generation. [Expat][11].

### Voxel Editors ###

* [Sproxel][28] - A 3D interface for quickly editing and creating voxel-based 3D

  models. [3-clause BSD][29].

## Learning Resources ##

These are all collections of information to help you learn about things that

might be necessary for developing games.

We aim for *complete* and *current* resources here whenever possible.

### Game Design ###

* [School of Game Design, Wikiversity][352] - A collection of learning resources

  for would-be game designers. [CC-BY-SA-3.0][127].

### Graphics ###

#### Beginner ####

* [Blender 3D: Noob to Pro][286] - A Wikibook for learning how to make 3D

  graphics with Blender. [CC-BY-SA-3.0][127].

#### Reference ####

* [Procedural Content Generation Wiki][378] - A collection of articles about the

  use of procedural generation to make stuff in games. [CC-BY-SA-3.0][127].

### Music ###

* [LibreMusicProduction][124] - A community-driven online resource for

  promoting musical creation and composition using free

  tools. [CC-BY-SA-4.0][125].

### Programming ###

* [Computer Science section on Saylor Academy][330] - A collection of computer

  science courses. Many of these deal with useful concepts for game

  programming. [CC-BY-3.0][5].

* [Introduction to Mobile Game Development][350] - Class on making simple mobile

  games with Gideros and Lua. [Expat][11].

#### Beginner ####

* [An Introduction to Python][282] - Pretty much what it says on the

  tin. [Python License][283].

* [Beginner 2d Game Programming Tutorial][340] (video) - A set of tutorials in

  2D game programming, illustrated using ECMAScript. [CC-BY-3.0][5].

* [C++ Tutorial for Beginners][333] (video) - A collection of basic video

  tutorials for C++. [CC-BY-3.0][5].

* [Effective Go][66] - A guide to writing good, clean and readable Go code for

  beginners. [CC-BY-3.0][5] (text), [3-clause BSD][29] (code).

* [Functional Programming in JavaScript][334] (video) - A series of tutorials

  about functional programming concepts, illustrated using

  ECMAScript. [CC-BY-3.0][5].

* [Java Collections Framework][337] (video) - A set of tutorials for using Java

  collections properly. [CC-BY-3.0][5].

* [Java For Complete Beginners][332] (video) - A collection of basic video

  tutorials for Java. [CC-BY-3.0][5].

* [Lua Programming][126] - A completed Wikibook on programming Lua. [CC-BY-SA-3.0][127].

* [Practical Haskell - getting started with Stack][50] - A series of tutorials

  designed to help people get started programming Haskell. [CC-BY-SA-4.0][125].

* [pygame_stuff][382] - A collection of code samples using

  PyGame. [GNU GPLv3][23] or later.

* [ocaml-sdl2-minigames][424] - A collection of code samples using OCamlSDL2. [Zlib][45].

* [The GNU C Programming Tutorial][280] - An introduction to programming in C by

  the nice GNU people. PDF. [GNU FDL][281].

* [why's (poignant) Guide to Ruby][237] - An interesting introductory book for

  Ruby. [CC-BY-SA-3.0][127].

#### Intermediate ####

* [Advanced C++][351] (video) - A tutorial on advanced aspects of C++. [CC-BY-3.0][5].

* [Dive Into Python][284] - A Python book for experienced programmers. [GNU FDL][281].

* [Haskell][285] - A very thorough Wikibook on programming Haskell. [CC-BY-SA-3.0][127].

* [Haskell Tutorial for C Programmers][336] - An introduction to Haskell for

  people coming from C-family languages. [Expat][11].

* [JavaFX Tutorial][335] (video) - A series of videos about how to use JavaFX to

  make GUIs. [CC-BY-3.0][5].

* [Java Multithreading][337] (video) - A series of videos about how to do

  multithreading work in Java. [CC-BY-3.0][5].

* [Mostly adequate guide to functional programming (in JavaScript)][144] - A

  book on the fundamentals of functional programming in

  ECMAScript. [CC-BY-SA-4.0][145].

* [Structure and Interpretation of Computer Programs][240] - A classic

  programming and teaching text. Designed for teaching Scheme, but can be useful

  to anyone writing in any language. [CC-BY-SA-4.0][125].

#### Reference ####

* [breakouts][278] - A collection of ECMAScript implementations of

  Breakout. [Expat][11].

* [Haskell Programming][128] - A complete wiki of the Haskell programming

  language. [Expat][11].

* [Joey Hess' blog][129] - A collection of posts, many of which are about

  Haskell use. [CC-BY-4.0][136].

### Talks ###

These are collections of game development-related talks, podcasts etc. that

might be interesting or informative to people seeking to design games.

* [Composers Play](423) (podcast) - Listen to a video game composer discuss

  soundtracks of iconic games such as Mass Effect, Duke Nukem II, Doom, and

  System Shock with their composers, often while playing the game.

* [GameDevRadio][268] (podcast) - A series of online radio shows devoted to

  entertaining and educating whoever is interested in game

  development. [CC-BY-SA-4.0][125].

* [Indievelopment talks][143] (video) - A collection of talks about various

  aspects of game development. [CC0][289].

## Programming Frameworks and Libraries ##

These are programming libraries or low-level code-based tools which are designed

to support game programming, but do not provide as much structure or support as

an engine would.

* [ActionKid][82] - A simple video game framework. Implemented in

  Haskell. [3-clause BSD][29].

* [Allegro 5][36] - A cross-platform library for low-level tasks, like creating

  windows, accepting user input and so forth. Implemented in C and

  C++. [3-clause BSD][29].

* [Bacon2D][72] - A framework to ease 2D game development, providing QML

  elements representing basic game entities. Implemented in C++. [Expat][11].

* [bgfx][261] - A 'build-your-own-engine' rendering library. [FreeBSD][17].

* [Chipmunk2D][74] - A fast and lightweight 2D game physics library. Implemented

  in C. [Expat][11].

* [ChipmunkSharp][73] - Advanced physics engine library based on

  Chipmunk. Implemented in C#. [Expat][11].

* [Cinder][113] - A community-developed library for creative

  coding. Implemented in C++. [FreeBSD][17].

* [ClanLib][131] - A cross-platform toolkit with a primary focus on game

  creation. Implemented in C++. ([git][132]). [zlib][45].

* [CutJS][76] - A lightweight and fast 2D HTML5 rendering engine for

  cross-platform game development. Implemented in ECMAScript. [Expat][11].

* [Dear ImGui][400] - An Immediate Mode Graphical User interface for C++ with minimal dependencies. [zlib][45]

* [DotRecast][436] - A port of Recast & Detour, navigation mesh toolset for games, Unity3D, servers, C#. [zlib][45].

* [enchant.js][65] - A framework for developing simple HTML5 + ECMAScript

  games. Implemented in ECMAScript. [Expat][11].

* [EndGate][78] - A framework for building HTML5 games. Implemented in

  TypeScript. [Expat][11].

* [Epoxy][381] - A library for handling OpenGL function pointer

  management. Implemented in C. [Expat][11].

* [Friflo.Engine.ECS][440] - High-performance C# ECS with simple API. Supports .NET, WASM/WebAssembly, Native AOT, Unity, Godot, MonoGame, ...

* [FNA][433] - A reimplementation of the Microsoft XNA Game Studio 4.0 Refresh

  libraries. Implemented in C#. [MS-PL][247]

* [Foster][437] - A small cross-platform 2D game framework. Implemented in C#. [MIT][403]

* [GameJs][279] - A thin library on top of the Canvas API, including some

  helpful game development modules. [Expat][11].

* [Gideros][349] - A cross-platform game development framework in Lua. Various

  licenses, all free.

* [Gladiator3D][267] - A raycasting engine. Implemented in

  ECMAScript. [Expat][11].

* [GLFW][401] - A multi-platform library for OpenGL, OpenGL ES and Vulkan development on the desktop. [zlib][45]

* [HaxeFlixel][79] - A cross-platform development framework, supporting many

  targets. Implemented in Haxe. [Expat][11].

* [HaxePunk][179] - A development framework designed to let you build games on

  any platform. [Expat][11].

* [ImGuizmo][402] - An immediate mode 3D gizmo for scene editing and other controls based on [Dear ImGui][400]. [MIT][403]

* [Kcp][414] - A fast and reliable ARQ protocol that helps fast-action games reduct network latency. [MIT][403]

* [Kivy][80] - Rapid-development library for multi-touch and visual apps on many

  platforms. Implemented in Python. [Expat][11].

* [Kuko][348] - A cross-platform development library, designed for mobile

  devices. Implemented in C++ and Lua. [Expat][11].

* [libGDX][86] - Cross-platform game development framework. Implemented in

  Java. [Apache 2.0][71].

* [libRocket][270] - An HTML/CSS-based UI library. Implemented in

  C++. [Expat][11].

* [libSDL2pp][271] - A set of C++11 bindings for SDL2. Implemented in

  C++. [zlib][45].

* [LimeJS][87] - A framework for building fast HTML5 games. Implemented in

  ECMAScript. [Apache 2.0][71].

* [LoomSDK][88] - A very large and powerful framework for cross-platform 2D

  game development. Implemented in C++. [Apache 2.0][71].

* [LÖVE][90] - A framework for making 2D games. Implemented in Lua. [zlib][45]

  .

* [LuaStudio][415] - A cross-platform framework/development tool for

  making 2D/3D games. Lua/LuaJIT programming language based. [zlib][45]

* [MINX][92] - MINX Is Not XNA; a framework resembling XNA. Implemented in

  C++. [3-clause BSD][29].

* [p2.js][111] - 2D physics library. Implemented in ECMAScript. [Expat][11].

* [pixi.js][275] - A 2D rendering engine. Implemented in

  ECMAScript. [Expat][11].

* [Polycode][120] - Framework for games and interactive

  applications. Implemented in C++. Has Lua bindings. [Expat][11].

* [putils](https://github.com/phisko/putils) - Phisko's C++ utilities. Large collection of helper classes and functions. [MIT]

* [putils_meta](https://github.com/phisko/meta/) - Phisko's metaprogramming utilities. Collection of type traits and compile-time helpers. [MIT]

* [putils_reflection](https://github.com/phisko/reflection/) - A simple, stand-alone, header-only and easily pluggable `constexpr` reflection system. [MIT]

* [PyDark][95] - Game framework on top of PyGame; designed to be easy to pick

  up. Implemented in Python. [Expat][11].

* [PyGame][106] - A set of modules designed for writing games. Implemented in

  Python. [GNU LGPLv2][102] or later.

* [Quasi-Engine][276] - A set of Qt-based tools for game

  development. Implemented in C++. [GNU LGPLv2][102] or later.

* [raylib][390] - Low-level library designed to learn videogames programming.

  Implemented in C, but has Lua and Go bindings. [zlib][45]

* [SDL][46] - Another cross-platform library for low-level tasks, like creating

  windows, accepting user input, and so forth. Implemented in C. [zlib][45].

* [SFML][109] - Simple and Fast Multimedia Library; a multi-platform,

  multi-language, multimedia interface to various computer hardware. Implemented

  in C++. Has a [range of bindings][110]. [3-clause BSD][29].

* [Slick2D][322] - A set of tools to make 2D game development

  easier. Implemented in Java. [3-clause BSD][29].

* [Three.js][69] - A library that makes WebGL easy to use. Implemented in

  ECMAScript. [Expat][11].

* [Tracy][420] - C++ frame profiler. [3-clause BSD][29].

* [voxel.js][67] - A multi-component framework for bulding voxel games for

  modern browsers. Implemented in ECMAScript. [3-clause BSD][29].

* [ZenGL][393] - A cross-platform game development library designed to provide

  necessary functionality for rendering 2D-graphics, handling input, sound output,

  etc. Implemented in Pascal. [zlib][394].

## Utilities ##

This is a catch-all category for things that don't fit anywhere else.

* [Assimp][100] - Open Asset Import Library; a portable way to import various

  well-known 3D model formats in a uniform manner. Implemented in C++, with a

  range of bindings. [3-clause BSD][29].

* [Easel.js][265] - Provides a range of tools to make working with the HTML5

  Canvas API easier. Implemented in ECMAScript. [Expat][11].

* [EnginesDatabase.com][435] - A crowd-sourced database website of Game 

  Engines and free (as in freedom) games for each engine.

* [Gmsh][138] - A 3D finite-element grid generator with a built-in CAD engine

  and post-processor. [GNU GPLv2][14] or later.

* [libcaca][114] - An ASCII graphics rendering library for terminal-based

  interfaces. [WTFPLv2][169].

* [libnoise][101] - A portable coherent noise-generation library. Implemented

  in C++. [GNU LGPLv2][102] or later.

* [PhysicsFS][99] - A library to provide abstract access to various

  archives. [zlib][45].

* [ScummVM][53] - A program which allows you to run certain classic graphical

  point-and-click adventure games, provided you already have their data

  files. [GNU GPLv2][14] or later.

* [Torsion][365] - A TorqueScript IDE. [Expat][11].

* [TrenchBroom][370] - A cross-platform level editor for Quake-engine-based

  games. Currently supports Quake, Quake 2 and Hexen 2 engine-based

  games. [GNU GPLv3][23] or later.

* [WorldForge][135] - Provides everything needed to create your own free

  software MMORPG. [GNU GPLv3][23] or later (or a compatible license).

[1]: https://www.fsf.org/about/what-is-free-software

[2]: http://freedomdefined.org/Definition

[3]: http://7soul1.deviantart.com/gallery/44815788/Free-Stuff

[4]: http://game-icons.net/

[5]: https://creativecommons.org/licenses/by/3.0/

[6]: https://openclipart.org/

[7]: http://opengameart.org/

[8]: http://www.widgetworx.com/spritelib/

[9]: https://directory.fsf.org/wiki/License:CPLv1.0

[10]: http://arnaud.ile.nc/cantree/generator.php

[11]: https://directory.fsf.org/wiki/License:Expat

[12]: http://www.vecteezy.com/

[13]: https://www.yobi3d.com/

[14]: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html

[15]: http://www.piskelapp.com/

[16]: http://pngquant.org/

[17]: https://directory.fsf.org/wiki?title=License:FreeBSD

[18]: https://github.com/Kilian/Trimage

[19]: http://overlap2d.com/

[20]: https://directory.fsf.org/wiki/License:Apache2.0

[21]: http://www.mapeditor.org/

[22]: http://www.gimp.org/

[23]: https://www.gnu.org/licenses/gpl.html

[24]: https://inkscape.org/en/

[25]: https://www.blender.org/

[26]: http://www.makehumancommunity.org/

[27]: https://www.gnu.org/licenses/agpl.html

[28]: http://sproxel.blogspot.com.br/p/about-sproxel.html

[29]: https://directory.fsf.org/wiki/License:BSD_3Clause

[30]: http://www.freesound.org/

[31]: https://musopen.org/

[32]: http://soundbible.com/royalty-free-sounds-1.html

[33]: http://audacity.sourceforge.net/

[34]: http://milkytracker.org/?about

[35]: http://www.drpetter.se/project_musagi.html

[36]: http://alleg.sourceforge.net/readme.html

[37]: http://neotextureedit.sourceforge.net/

[38]: https://www.gnu.org/licenses/lgpl.html

[39]: https://cpetry.github.io/TextureGenerator-Online/

[40]: https://cpetry.github.io/NormalMap-Online/

[41]: http://www.ogre3d.org/

[42]: https://en.wikipedia.org/wiki/OGRE#OGRE_ports_and_wrappers

[43]: http://irrlicht.sourceforge.net/

[44]: https://en.wikipedia.org/wiki/Irrlicht_Engine

[45]: https://directory.fsf.org/wiki/License:Zlib

[46]: https://www.libsdl.org/

[47]: https://www.gnu.org/software/freedink/

[48]: http://box2d.org/about/

[49]: https://directory.fsf.org/wiki/License:BSD-2-Clause

[50]: http://seanhess.github.io/2015/08/04/practical-haskell-getting-started.html

[51]: http://www.godotengine.org/

[52]: https://en.wikipedia.org/wiki/Godot_%28game_engine%29#Scripting

[53]: http://scummvm.org/

[54]: https://github.com/clintbellanger/flare-engine/

[55]: http://fifengine.net/

[56]: https://opensludge.github.io/

[57]: https://github.com/adventuregamestudio/ags

[58]: https://directory.fsf.org/wiki/License:ArtisticLicense2.0

[59]: http://bulletphysics.org/wordpress/

[60]: http://www.compilgames.net/

[61]: https://www.garagegames.com/products/torque-3d

[62]: https://www.garagegames.com/products/torque-3d/overview/programming

[63]: https://www.garagegames.com/products/torque-2d

[64]: http://phaser.io/

[65]: https://playcanvas.com/

[66]: https://golang.org/doc/effective_go.html

[67]: http://voxeljs.com/

[68]: http://craftyjs.com/

[69]: http://threejs.org/

[70]: http://www.opsound.org/index.php

[71]: https://directory.fsf.org/wiki/License:Apache2.0

[72]: http://bacon2d.com/

[73]: https://github.com/netonjm/ChipmunkSharp

[74]: https://chipmunk-physics.net/

[75]: http://python.cocos2d.org/

[76]: http://cutjs.org/

[77]: http://duality.adamslair.net/

[78]: http://endgate.net/

[79]: http://haxeflixel.com/

[80]: http://kivy.org/#home

[81]: http://mypaint.intilinux.com/

[82]: https://github.com/egonSchiele/actionkid

[83]: http://helm-engine.org/

[84]: https://github.com/LambdaHack/LambdaHack

[85]: https://bandcamp.com/tag/creative-commons

[86]: http://libgdx.badlogicgames.com/

[87]: http://www.limejs.com/

[88]: http://loomsdk.com/

[89]: http://lycheejs.org/index.html

[90]: https://love2d.org/

[91]: http://brm.io/matter-js/

[92]: http://libminx.org/

[93]: http://melonjs.org/

[94]: https://www.reddit.com/r/FreeGaming

[95]: https://github.com/SirFroweey/PyDark

[96]: https://libre.fm/

[97]: https://commons.wikimedia.org/wiki/Main_Page

[98]: https://soundcloud.com/groups/creative-commons

[99]: https://icculus.org/physfs/

[100]: http://assimp.sourceforge.net/

[101]: http://libnoise.sourceforge.net/

[102]: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html

[103]: http://meshlab.sourceforge.net/

[104]: https://www.synfig.org/

[105]: http://ngplant.org/

[106]: http://pygame.org/wiki/about

[107]: http://www.renpy.org/

[108]: https://krita.org/

[109]: http://www.sfml-dev.org/index.php

[110]: http://www.sfml-dev.org/download/bindings.php

[111]: https://schteppe.github.io/p2.js/

[112]: http://azul3d.org/

[113]: http://libcinder.org/

[114]: https://github.com/cacalabs/libcaca

[115]: http://www.horde3d.org/

[116]: https://directory.fsf.org/wiki/License:EPLv1.0

[117]: http://www.ode.org/

[118]: https://directory.fsf.org/wiki/License:BSD_4Clause

[119]: https://www.panda3d.org/

[120]: http://polycode.org/

[121]: https://springrts.com/

[122]: https://urho3d.github.io/

[123]: https://notabug.org/SylvieLorxu/HERITAGE

[124]: http://libremusicproduction.com/

[125]: https://creativecommons.org/licenses/by-sa/4.0/

[126]: https://en.wikibooks.org/wiki/Lua_Programming

[127]: https://creativecommons.org/licenses/by-sa/3.0/

[128]: https://wiki.haskell.org/Haskell

[129]: https://joeyh.name/blog/about/

[130]: https://ardour.org/

[131]: https://en.wikipedia.org/wiki/ClanLib

[132]: https://github.com/sphair/ClanLib

[133]: https://beast.testbit.org/

[134]: http://www.dengine.net/engine

[135]: http://www.worldforge.org/

[136]: https://creativecommons.org/licenses/by/4.0/

[137]: http://www.pawfal.org/fluxus/

[138]: http://geuz.org/gmsh/

[139]: http://hme.sourceforge.net/

[140]: http://jmonkeyengine.org/

[141]: https://github.com/kmkolasinski/AwesomeBump

[142]: https://lmms.io/

[143]: https://vimeo.com/indievelopment/videos

[144]: https://github.com/DrBoolean/mostly-adequate-guide

[145]: https://creativecommons.org/licenses/by-sa/4.0/

[146]: https://goblinrefuge.com/mediagoblin/u/kozross/collection/learn-java-for-beginners/

[147]: https://github.com/dmcinnes/HTML5-Asteroids

[148]: https://github.com/budnix/ball-and-wall

[149]: https://github.com/ellisonleao/clumsy-bird

[150]: https://github.com/leereilly/Coil

[151]: https://github.com/redbluegames/game-off-2013

[152]: https://github.com/varunpant/CrappyBird

[153]: https://github.com/MattSurabian/DuckHunt-JS

[154]: https://github.com/operasoftware/Emberwind

[155]: https://github.com/razh/game-off-2013

[156]: https://github.com/petarov/game-off-2012

[157]: https://github.com/jrgdiz/snake

[158]: https://github.com/Couchfriends/Space-Shooter

[159]: https://github.com/maettig/starship-sorades-13k

[160]: https://github.com/Loopeex/space-crusade

[161]: https://github.com/martindrapeau/backbone-game-engine

[162]: https://github.com/kripken/BananaBread

[163]: https://github.com/CamHenlin/Roguish

[164]: https://github.com/antionio/game-off-2013

[165]: https://github.com/mozilla/BrowserQuest

[166]: https://directory.fsf.org/wiki/License:MPLv2.0

[167]: https://github.com/freeciv/freeciv-web

[168]: https://github.com/morozd/blk-game

[169]: https://github.com/Nurgak/Cube-engine

[170]: https://github.com/Q42/0hn0

[171]: https://github.com/Q42/0hh1

[172]: https://github.com/gabrielecirulli/2048

[173]: https://github.com/doublespeakgames/adarkroom

[174]: https://github.com/cxong/Beatrix

[175]: https://github.com/sweetcarolinagames/BitBot

[176]: http://oxygine.org/

[177]: https://github.com/Aerolab/blockrain.js

[178]: https://github.com/cxong/DrunkenViking

[179]: http://haxepunk.com/

[180]: https://github.com/antila/ludum-dare-28

[181]: https://github.com/abejfehr/parity

[182]: https://github.com/Zolmeister/pond

[183]: https://github.com/dart-lang/sample-pop_pop_win

[184]: https://github.com/Zolmeister/prism

[185]: https://www.reddit.com/r/godot

[186]: https://github.com/Zolmeister/zop

[187]: https://github.com/particle-clicker/particle-clicker

[188]: https://github.com/lpinca/binb

[189]: https://github.com/cshepp/candyjam/

[190]: https://github.com/munificent/hauberk

[191]: https://github.com/KrofDrakula/squirts

[192]: https://github.com/fernjager/game-off-2013

[193]: https://github.com/rohit-n/Clonepoint

[194]: https://github.com/akien-mga/dynadungeons

[195]: https://github.com/BlkStormy/epic-inventor

[196]: https://github.com/cxong/FallingTime

[197]: https://github.com/koonsolo/MysticMine

[198]: https://github.com/petarov/savagewheels

[199]: https://github.com/laochailan/taisei

[200]: https://github.com/teeworlds/teeworlds/

[201]: https://github.com/albertz/openlierox

[202]: https://github.com/ioquake/ioq3

[203]: https://github.com/zturtleman/spearmint

[204]: https://github.com/Turtle-Arena/turtle-arena-code

[205]: https://github.com/LanJian/coffee2d

[206]: https://github.com/Warsow/qfusion

[207]: https://github.com/CleverRaven/Cataclysm-DDA

[208]: https://github.com/EasyRPG/

[209]: https://github.com/jwvhewitt/dmeternal

[210]: https://github.com/egoboo/egoboo

[211]: https://github.com/clintbellanger/flare-game

[212]: https://github.com/Nooskewl/monster

[213]: https://github.com/Nooskewl/monster-rpg-2

[214]: https://github.com/riksweeney/edgar

[215]: https://github.com/SuperTux/supertux

[216]: https://github.com/Tiehuis/2048-cli

[217]: https://github.com/alewmoose/2048-in-terminal

[218]: https://goblinrefuge.com/mediagoblin/u/kozross/collection/functional-programming-in-javascript/

[219]: https://github.com/DusteDdk/Wizznic

[220]: https://github.com/devnewton/newton_adventure

[221]: https://github.com/devnewton/nedetlesmaki

[222]: https://directory.fsf.org/wiki/License:Free-Art-L-v1.3

[223]: https://github.com/stuntrally/stuntrally

[224]: https://github.com/supertuxkart/stk-code

[225]: https://github.com/Blackvoxel/Blackvoxel

[226]: https://github.com/fogleman/Craft

[227]: https://github.com/endless-sky/endless-sky

[228]: https://github.com/freeminer/freeminer

[229]: https://github.com/minetest/minetest

[230]: https://github.com/MovingBlocks/Terasology

[231]: https://github.com/simtr/The-Powder-Toy

[232]: https://www.google.com/fonts

[233]: https://github.com/colobot/colobot

[234]: https://github.com/a-nikolaev/curseofwar

[235]: https://github.com/SimHacker/micropolis

[236]: https://github.com/OpenDungeons/OpenDungeons

[237]: http://mislav.uniqpath.com/poignant-guide/book/chapter-1.html

[238]: https://github.com/henkboom/pax-britannica

[239]: https://github.com/pioneerspacesim/pioneer

[240]: https://mitpress.mit.edu/sicp/full-text/book/book.html

[241]: https://github.com/the3dfxdude/7kaa

[242]: https://github.com/tales/sourceoftales

[243]: https://github.com/w84death/Tanks-of-Freedom

[244]: https://github.com/wesnoth/wesnoth

[245]: https://github.com/unknown-horizons/unknown-horizons

[246]: https://github.com/int6/voxeliq

[247]: https://directory.fsf.org/wiki/License:MsPL

[248]: https://github.com/Warzone2100/warzone2100

[249]: https://github.com/ZeroK-RTS/Zero-K

[250]: https://github.com/MegaGlest/megaglest-source

[251]: https://github.com/gamedolphin/Lost-Beneath-The-Surface

[252]: https://github.com/gamedolphin/Masonry-JavaScript-Tetris-Clone

[253]: https://github.com/gamedolphin/javascript_snake

[254]: https://github.com/gamedolphin/follow_me_javascript_simon_clone

[255]: https://github.com/chuvidi2003/GidiGames

[256]: https://github.com/watabou/pixel-dungeon

[257]: https://github.com/chuvidi2003/PuzzleGame

[258]: https://github.com/Akihabara/akihabara

[259]: https://github.com/kripken/ammo.js

[260]: https://github.com/BabylonJS/Babylon.js

[261]: https://github.com/bkaradzic/bgfx

[262]: https://github.com/ChilliWorks/ChilliSource

[263]: https://github.com/ZhouWeikuan/cocos2d/tree/master/cocos2d-android

[264]: https://github.com/cocos2d/cocos2d-html5

[265]: https://github.com/CreateJS/EaselJS/

[266]: https://github.com/gameplay3d/GamePlay

[267]: https://github.com/krotik/gladiator_3d

[268]: http://www.gamedevradio.com/

[269]: https://github.com/gamelab/kiwi.js

[270]: https://github.com/librocket/librocket

[271]: https://github.com/AMDmi3/libSDL2pp

[272]: https://github.com/lo-th/Oimo.js

[273]: https://github.com/ekelokorpi/panda.js-engine

[274]: https://github.com/wellcaffeinated/PhysicsJS

[275]: https://github.com/pixijs/pixi.js

[276]: https://github.com/INdT/Quasi-Engine

[277]: https://github.com/turbulenz/turbulenz_engine

[278]: https://github.com/city41/breakouts

[279]: https://github.com/GameJs/gamejs

[280]: http://markburgess.org/CTutorial/GNU-ctut.pdf

[281]: https://www.gnu.org/licenses/fdl.html

[282]: http://www.network-theory.co.uk/docs/pytut/

[283]: https://directory.fsf.org/wiki?title=License:Python2.0.1

[284]: http://www.diveintopython.net/

[285]: https://en.wikibooks.org/wiki/Haskell

[286]: https://en.wikibooks.org/wiki/Blender_3D:_Noob_to_Pro

[287]: https://www.jamendo.com/

[288]: https://openclipart.org/

[289]: https://creativecommons.org/publicdomain/zero/1.0/

[290]: https://github.com/grumdrig/jsfxr

[291]: https://github.com/google/material-design-icons

[292]: http://castle-engine.sourceforge.net/

[293]: https://github.com/gamekit-developers/gamekit

[294]: http://incompetech.com/music/royalty-free/

[295]: http://www.openmusicarchive.org/

[296]: http://www.blender-models.com/

[297]: http://www.katorlegaz.com/3d_models/index.php

[298]: http://mocapdata.com/

[300]: http://tango.freedesktop.org/

[301]: http://openfontlibrary.org/

[302]: http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=OFL&_sc=1

[303]: https://www.theleagueofmoveabletype.com/

[304]: http://ccmixter.org/

[305]: http://unlicense.org/

[306]: http://www.cocos2d-x.org/

[307]: http://www.kivent.org/

[308]: http://enigma-dev.org/

[309]: http://enigma-dev.org/docs/Wiki/LateralGM

[310]: http://pulkomandy.tk/projects/GrafX2

[311]: http://www.maratis3d.org/

[313]: https://processing.org/

[314]: https://icculus.org/twilight/darkplaces/

[315]: http://orx-project.org/

[316]: https://www.reddit.com/r/freeculture/

[317]: http://playn.io/

[318]: https://www.libgosu.org/

[319]: http://getmoai.com/

[320]: http://opensource.org/licenses/CPAL-1.0

[321]: http://drpetter.se/project_sfxr.html

[322]: http://slick.ninjacave.com/

[323]: https://www.reddit.com/r/freesoftware/

[324]: http://freepo.st/community/FreeGaming

[325]: http://freepo.st

[326]: http://forum.freegamedev.net/

[327]: https://libregamewiki.org/Main_Page

[328]: http://www.freemusicarchive.org/

[329]: https://github.com/aduros/flambe

[330]: https://learn.saylor.org/course/index.php?categoryid=9

[331]: https://notabug.org/koz.ross/remastered-tyrian-graphics

[332]: https://notabug.org/koz.ross/java-for-complete-beginners

[333]: https://notabug.org/koz.ross/cpp-tutorial-for-beginners

[334]: https://notabug.org/koz.ross/fp-in-js

[335]: https://notabug.org/koz.ross/javafx-tutorial

[336]: https://wiki.haskell.org/Haskell_Tutorial_for_C_Programmers

[337]: https://notabug.org/koz.ross/java-collections-framework

[338]: https://notabug.org/koz.ross/java-multithreading

[339]: https://github.com/dommmel/coffee-snake

[340]: https://notabug.org/koz.ross/beginner-2d-game-programming

[341]: https://github.com/inexor-game/audioaugust

[343]: http://flif.info/

[344]: http://dthompson.us/pages/software/sly.html

[345]: https://musical-artifacts.com/artifacts

[346]: http://www.paratype.com/public/

[347]: http://www.paratype.com/public/pt_openlicense_eng.asp

[348]: https://github.com/Moosader/Kuko

[349]: http://giderosmobile.com/

[350]: https://github.com/Moosader/Intro-to-Mobile-Game-Development-2015

[351]: https://notabug.org/koz.ross/advanced-cpp

[352]: https://en.wikiversity.org/wiki/School:Game_design

[353]: https://github.com/gabrielecirulli/2048

[354]: https://github.com/BlkStormy/epic-inventor

[355]: http://www.blendswap.com/

[356]: http://www.duion.com/games/uebergame/main

[357]: http://superpowers-html5.com/index.en.html

[358]: http://directory.fsf.org/wiki/License:ISC

[359]: https://github.com/particle-clicker/particle-clicker

[360]: https://github.com/KOBUGE-Games/minilens

[361]: http://peers.community/

[362]: http://www.puzzlescript.net/

[363]: http://www.zipup.me/category/free-game-elements/

[364]: http://abau.org/dilay/

[365]: https://github.com/SickheadGames/Torsion

[366]: http://www.hydrogen-music.org/hcms/

[368]: https://www.silvermansound.com/free-music

[369]: http://anki3d.org/

[370]: http://kristianduske.com/trenchbroom/

[371]: https://alephone.lhowon.org/

[372]: https://arianne-project.org/

[373]: http://delta3d.org/

[374]: http://filipwasil.bitbucket.org/fillwave/

[375]: http://www.solarus-games.org/

[376]: https://github.com/a1studmuffin/SpaceshipGenerator

[377]: https://github.com/MaxSavenkov/drdestructo2

[378]: http://pcg.wikidot.com/

[379]: https://octaforge.org/

[380]: http://directory.fsf.org/wiki/License:IllinoisNCSA

[381]: https://github.com/anholt/libepoxy

[382]: https://notabug.org/jorgesumle/pygame_stuff

[383]: https://notabug.org/jorgesumle/bullet_dodger

[384]: https://savannah.nongnu.org/projects/retux

[385]: http://www.wowa.me/archive

[386]: https://rogueboxadventures.tuxfamily.org/

[387]: http://stellarengine.nongnu.org/

[388]: http://hexoshi.nongnu.org/

[389]: http://openclonk.org/

[390]: http://www.raylib.com/

[391]: https://github.com/raysan5/rfxgen

[392]: http://osgameclones.com/

[393]: http://www.zengl.org/

[394]: http://www.zengl.org/license.html

[395]: http://gaurav.munjal.us/Universal-LPC-Spritesheet-Character-Generator/

[396]: http://google.github.io/liquidfun/

[400]: https://github.com/ocornut/imgui

[401]: http://www.glfw.org/

[402]: https://github.com/CedricGuillemet/ImGuizmo

[403]: https://opensource.org/licenses/MIT

[405]: https://github.com/FortAwesome/Font-Awesome/

[406]: https://github.com/gammasoft/fatcow

[411]: https://github.com/nicodinh/kenney-icon-font/

[412]: https://github.com/juliettef/IconFontCppHeaders

[413]: https://gamesounds.xyz/

[414]: https://github.com/skywind3000/kcp/blob/master/README.en.md

[415]: https://scormpool.com/luastudio

[416]: https://github.com/dagostinelli/hypatia

[417]: https://github.com/gurkenlabs/litiengine

[418]: https://www.orama-interactive.com/pixelorama

[419]: https://github.com/RodZill4/material-maker

[420]: https://github.com/wolfpld/tracy

[421]: https://rpg.hamsterrepublic.com/ohrrpgce/Main_Page

[422]: https://musescore.org/en/download

[423]: https://www.youtube.com/playlist?list=PL05Yj9M-fWdJUySLU5fJ8Lg6h6t43_0nf

[424]: https://github.com/fccm/ocaml-sdl2-minigames

[425]: https://en.wikipedia.org/wiki/ABA_Games

[426]: http://www.asahi-net.or.jp/~cs8k-cyu/blog/2014/12/12/games-in-2014/

[427]: https://github.com/abagames

[428]: http://noiz2sa.sourceforge.net/

[429]: https://wiki.haskell.org/Applications_and_libraries/Games

[430]: https://github.com/jhasse/jngl

[431]: https://github.com/hackclub/sprig

[432]: https://github.com/zzo38/freeheromesh

[433]: https://fna-xna.github.io/

[434]: https://poly.pizza

[435]: https://enginesdatabase.com

[436]: https://github.com/ikpil/DotRecast

[437]: https://github.com/FosterFramework/Foster

[438]: https://rapier.rs

[439]: https://github.com/Anuken/Mindustry

[440]: https://github.com/friflo/Friflo.Json.Fliox/blob/main/Engine/README.md