Open Source Games
419 items from michelpereira/awesome-open-source-games ★3,236
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SimCity github.com
City-building game based on the original code for SimCity.
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Untrusted github.com
Meta-JavaScript adventure game by Alex Nisnevich and Greg Shuflin.
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Arx Fatalis github.com
Cross-platform port of Arx Fatalis, a first-person role-playing game.
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Doom 3 github.com
GPL source code release.
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C-Dogs SDL github.com
Overhead shoot-em-up port of the classic DOS game.
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KeeperRL github.com
Roguelike dungeon builder inspired by Dwarf Fortress.
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Reia github.com
RPG game action-adventure MMO focusing heavily on story, combat, and an open-world sandox adventure. Built with Godot, Rust, and Zig.
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Cocos2d for iPhone github.com
Framework for building 2D games, demos, and other graphical/interactive applications for iPod Touch, iPhone, iPad and Mac. It is based on the cocos2d design but instead of using python it, uses objective-C.
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Unturned github.com
Free open-world zombie survival sandbox game.
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Terasology github.com
Voxel world game engine inspired by Minecraft and others with fancy graphic effects and a heavy focus on extensibility.
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libfreenect github.com
Drivers and libraries for the Xbox Kinect device on WIndows, Linux, and macOS.
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QICI Engine github.com
Free JavaScript game engine library with a web-based comprehensive suite of toolset for making HTML5 games.
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Unreal Engine github.com
C++ AAA game engine. It isn't completely free, but you can easily get access to the full source code. https://www.unrealengine.com/
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Zero-K github.com
Open source RTS game with physical projectiles and smart units.
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DDraceNetwork github.com
Cooperative online precision platformer with thousands of maps and global ranks.
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Atomic Engine github.com
Features 2D and 3D rendering, standards compliant JavaScript, full Player and Editor source on GitHub, Windows & Mac Editors, with deployment to Windows, Mac, WebGL, Android, and iOS from the editor.
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SuperTux github.com
Classic 2D jump'n'run sidescroller with Tux.
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Starling github.com
ActionScript 3 library that mimics the conventional Flash display tree architecture, can be deployed to mobile devices (iOS, Android), the desktop (Windows, macOS), and to the browser (via the Flash plugin).
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MaNGOS github.com
Full featured World of Warcraft server.
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Descent 3 github.com
Pilot a fighter in a six-degree-of-freedom shooter across underground and surface environments.
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Space Engineers github.com
Voxel-based sandbox game set in an asteroid field in space.
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Itch github.com
An electron cross-platform game downloader, installer, and library manager for itch.io written in TypeScript.
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0 A.D. github.com
3D RTS similar to Age of Empires II.
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DuckHunt JavaScript github.com
DuckHunt ported to JavaScript and HTML5 with a level creator.
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OpenFodder github.com
Open-source implementation of Cannon Fodder.
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Hextris github.com
Addictive puzzle game inspired by Tetris.
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Mario 5 HTML github.com
Infinite Mario in HTML5 JavaScript using Canvas and Audio elements.
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Mario-Level-1 github.com
First level of Super Mario Bros made with Python and Pygame.
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OpenXcom github.com
Clone of the original X-COM.
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Freeciv-web github.com
Build cities, collect resources, organize your government, and build an army, with the ultimate goal of creating the best civilization.
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Meridian 59 github.com
The first 3D MMORPG, released in 1996 and open sourced in 2012 - the game is being actively developed by the community.
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Hauberk github.com
ASCII-art based procedurally-generated dungeon crawl game. It's written in Dart and runs in your browser.
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Stepmania github.com
Cross-platform dance rhythm game.
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Evennia MUD/MU* Creation System github.com
Library for creating online multiplayer text games (MUD, MUSH, MUX, MUCK, MOO etc) in pure Python.
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osu-framework github.com
A game framework written with osu! in mind.
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Pioneer github.com
Game of lonely space adventure.
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Rogue Legacy github.com
Source code for Rogue Legacy 1.
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Dash github.com
A free and open 3D game engine written in D.
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MegaGlest github.com
Real-time strategy game engine (cross-platform, 3-d).
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3d.city github.com
Goal was to build a city in 3D to test the performance of WebGL and and Three.js.
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HexGL github.com
Futuristic HTML5 racing game, challenge your friends on this fast-paced 3D game.
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Brood War API github.com
C++ framework to interact with the Real Time Strategy (RTS) game Starcraft: Broodwar.
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FlashPunk github.com
Framework to build 2D games. Provides graphics, events, inputs, animation, etc.
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Clumsy Bird github.com
Flappy Bird clone in JavaScript using MelonJavaScript.
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Ikemen GO github.com
An open-source fighting game engine that supports MUGEN resources. Written in Go.
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Greenworks github.com
A Node.js addon allowing you to integrate HTML5 game with Steamworks.
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KaM Remake github.com
RTS game remake of “Knights and Merchants” written in Delphi from scratch.
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Nudoku github.com
Ncurses based CLI sudoku game.
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Angband github.com
Single-player dungeon exploration game in the universe of JRR Tolkien.
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Unknown Horizons github.com
2D isometric RTS economic strategy game written in C++ & Python, built on the Flexible Isometric Free Engine.
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