Best Open Source game Libraries
A curated list of the most popular GitHub repositories tagged with game. Select any project to visualize its architecture and dive into the codebase using RepoMind's AI engine.
#1dkhamsing/open-source-ios-apps
:iphone: Collaborative List of Open-Source iOS Apps
#2pixijs/pixijs
The HTML5 Creation Engine: Create beautiful digital content with the fastest, most flexible 2D WebGL renderer.
#34ian/GDevelop
🎮 Open-source, cross-platform 2D/3D/multiplayer game engine designed for everyone.
#4Anuken/Mindustry
The automation tower defense RTS
#5libgdx/libgdx
Desktop/Android/HTML5/iOS Java game development framework
#6ppy/osu
rhythm is just a *click* away!
#7lichess-org/lila
♞ lichess.org: the forever free, adless and open source chess server ♞
#8mahmoud/awesome-python-applications
💿 Free software that works great, and also happens to be open-source Python.
#9kitao/pyxel
A retro game engine for Python
#10OpenRA/OpenRA
Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.
#11OpenRCT2/OpenRCT2
An open source re-implementation of RollerCoaster Tycoon 2 🎢
#12CleverRaven/Cataclysm-DDA
Cataclysm - Dark Days Ahead. A turn-based survival game set in a post-apocalyptic world.
#13egametang/ET
Unity3D Client And C# Server Framework
#14olistic/warriorjs
🏰 An exciting game of programming and Artificial Intelligence
#15diasurgical/DevilutionX
Diablo build for modern operating systems
#16AirtestProject/Airtest
UI Automation Framework for Games and Apps
#17diasurgical/devilution
Diablo devolved - magic behind the 1996 computer game
#18RandyGaul/cute_headers
Collection of cross-platform one-file C/C++ libraries with no dependencies, primarily used for games
#19HearthSim/Hearthstone-Deck-Tracker
A deck tracker and deck manager for Hearthstone on Windows
#20HFO4/gameboy.live
🕹️ A basic gameboy emulator with terminal "Cloud Gaming" support
#21Kavex/GameDev-Resources
:video_game: :game_die: A wonderful list of Game Development resources.
#22GameServerManagers/LinuxGSM
The command-line tool for quick, simple deployment and management of Linux dedicated game servers.
#23AlmasB/FXGL
Java / JavaFX / Kotlin Game Library (Engine)
#24openfootmanager/openfootmanager
An open source soccer/football manager game
#25flizzywine/dsh-tavern
基于DSH的Agent酒馆。类酒馆文字游戏Agent。兼容SillyTavern生态，人物卡直接导入就能玩。更快、更稳、更鲜活。所有模型都能用。手机也能玩。
#26LostArtefacts/TRX
Open source re-implementation of Tomb Raider I, Tomb Raider II and Tomb Raider III, along with additional enhancements and bugfixes
#27bradharding/doomretro
The classic, refined DOOM source port. For Windows PC.
#28tgstation/TerraGov-Marine-Corps
TGMC: TerraGov Marine Corps, a SS13 mod
#29dan335/dominus
Dominus - Multiplayer Social Strategy Web Game
#30studie-tech/TheNinjaRPG
Source code for TheNinja-RPG Core 4
#31moorestech/moorestech
Animated open world automated factory game
#32razy2056-cpu/roblox-power-hub-prime
Roblox Script Hub 2026: 800+ Games Auto Farm ESP Aimbot Admin Tools
#33WizPrince/f95-gallery-gleaner
NSFW Game Manager 2026: Smart Adult Game Updater & Mod Organizer
#34mahesh-thakur92288/fly-omarchy
Learn Hyprland Keybinds Fast 2026: Interactive Trainer for Your Real Window Manager
#35REILAN1213/BO7-Offline-Sandbox-Enhancer
Best Offline Black Ops 7 Zombies Trainer 2026 God Mode Infinite Ammo Points Guide