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