Godot is a powerful cross-platform game engine
A cross-platform PSP emulator
Stream switch games to your PC via USB or network
Xash3D FWGS engine
A simple and easy-to-use library to enjoy videogames programming
UCI chess engine
Do virtual gear shifting (and more) in any rider app
Desktop/Android/HTML5/iOS Java game development framework
Sandbox video game with a powerful physics engine
Open source voxel game engine with support for survival and crafting
One framework for creating powerful cross-platform games
Home theater software and entertainment hub for digital media
RetroArch is a frontend for emulators, game engines and media players.
Voxel game-creation platform with easy modding and game creation
The game engine for everyone
Open source HTML5 game framework that offers WebGL and Canvas
Open-source Android/Desktop remake of Civ V
The source code to VVVVVV
Cocos simplifies game creation and distribution with Cocos Creator
An open source reimplementation of the Among Us Server
Netcode that provides networking capabilities to GameObject workflows
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Pokedex demonstrates modern Android development with Hilt
Multi-platform 2D and 3D game engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)