A shield for the Arduino Mega that can back up video game cartridges
Universal Aim Assist Framework
Android, UIQ 3.0, Series 60 Edition 5 open-source software
Godot is a powerful cross-platform game engine
A cross-platform PSP emulator
Open source voxel game engine with support for survival and crafting
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
Open-source Android/Desktop remake of Civ V
Desktop/Android/HTML5/iOS Java game development framework
Open source HTML5 game framework that offers WebGL and Canvas
UCI chess engine
Stream switch games to your PC via USB or network
Open source cross-platform multi-purpose game toolkit
An open source reimplementation of the Among Us Server
One framework for creating powerful cross-platform games
Sandbox video game with a powerful physics engine
Do virtual gear shifting (and more) in any rider app
Source of Mana is a unique 2D MMORPG
Pokedex demonstrates modern Android development with Hilt
The game engine for everyone
RetroArch is a frontend for emulators, game engines and media players.
Xash3D FWGS engine
A simple and easy-to-use library to enjoy videogames programming
Voxel game-creation platform with easy modding and game creation
The source code to VVVVVV