A cross-platform PSP emulator
Godot is a powerful cross-platform game engine
Open source voxel game engine with support for survival and crafting
UCI chess engine
Xash3D FWGS engine
Desktop/Android/HTML5/iOS Java game development framework
Stream switch games to your PC via USB or network
Open source HTML5 game framework that offers WebGL and Canvas
One framework for creating powerful cross-platform games
Voxel game-creation platform with easy modding and game creation
Sandbox video game with a powerful physics engine
The game engine for everyone
Open-source Android/Desktop remake of Civ V
A certain block game
An open source reimplementation of the Among Us Server
A simple and easy-to-use library to enjoy videogames programming
Open source cross-platform multi-purpose game toolkit
Free, cross-platform 2D game engine powered by Haxe and OpenFL
The source code to VVVVVV
RetroArch is a frontend for emulators, game engines and media players.
Netcode that provides networking capabilities to GameObject workflows
Pokedex demonstrates modern Android development with Hilt
Do virtual gear shifting (and more) in any rider app
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Solar2D Game Engine main repository (ex Corona SDK)