# 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)
* [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.

* [ArtSader][342] - A directory of free culture assets. Small, but
  growing. [CC0][289] or [CC-BY-4.0][136].
* [Material Design Icons][291] - An official icon set from Google following
  specific guidelines. [CC-BY-4.0][136].
* [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.

## 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].

### General ###

* [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].
* [Blender Game Engine][312] - Implemented in C++. Scripted using a GUI and
  Python. [GNU GPLv2][14] or later.
* [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.
* [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].
* [KivEnt][307] - Implemented in Python. [Expat][11].
* [LambdaHack][84] - Implemented in Haskell, Designed for roguelikes. [3-clause BSD][29].
* [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].
* [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.
* [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++. Comes with its own editor. Designed for
  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. [MsPL][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].
* [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].
* [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].

### Text-based ###

These engines suit text-rich games (from parser adventures to visual novels).

* [Ink][391] - An embeddable scripting engine. Implemented in C# (also see [InkJS][396]).[Expat][11]
* [INSTEAD][392] - Designed for visual novels. The engine is implemented in C with interface in Lua. [Expat][11]
* [Ren'Py][107] - Implemented in Python. Designed for visual novels. [Expat][11], with some parts under [GNU LGPLv3][38] only.
* [Salet][393] - Designed for rich media novels. Implemented in CoffeeScript. [Expat][11]
* [Twine][394] - Novice-friendly, wide range of style. Implemented in JavaScript. [Expat][11]
* [Quest][395] - The only parser engine on the list. Implemented in C#. [Expat][11]

## 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).
* [TicTacToe][367] - A simple tic-tac-toe game. [Expat][11]
  (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).

### 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.

### 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).
* [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).

### 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.
* [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 ###

* [Game-icons.net][4] - A constantly-growing collection of black-and-white
  icons. Available in SVG or PNG. [CC-BY-3.0] [5] .
* [Tango Icon Library][300] - An icon set project with a goal to create a
  consistent user interface. Public domain.

### Sprites ###

* [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 ###

* [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.
* [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.
* [NeoTextureEdit][37] - An easy-to-use, graph-based, procedural texture editor.
  [GNU LGPLv3][38] 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].
* [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 ###

* [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.
* [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.

* [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++. [ClanLib license] [132] .
* [CutJS] [76] - A lightweight and fast 2D HTML5 rendering engine for
  cross-platform game development. Implemented in ECMAScript. [Expat] [11] .
* [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].
* [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] .
* [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] .
* [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]
  .
* [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] .
* [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.
* [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] .
* [voxel.js] [67] - A multi-component framework for bulding voxel games for
  modern browsers. Implemented in ECMAScript. [3-clause BSD] [29] .

## 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] .
* [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.makehuman.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/

[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]: http://www.pydark.com/
[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]: http://www.synfig.org/cms/
[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]: http://www.clanlib.org/index.html
[132]: http://www.clanlib.org/license.html
[133]: https://testbit.eu/wiki/Beast_Home
[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/
[312]: https://www.blender.org/manual/game_engine/introduction.html
[313]: https://processing.org/
[313]: https://processingjs.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
[342]: http://art.devsader.com/
[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/
[367]: https://github.com/LelixSuper/TicTacToe
[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://ifwiki.org/index.php/Interactive_fiction
[391]: http://www.inklestudios.com/ink/
[392]: http://instead.syscall.ru/
[393]: https://salet.su/
[394]: http://twinery.org/
[395]: https://textadventures.co.uk/quest/
[396]: https://github.com/y-lohse/inkjs