Android, UIQ 3.0, Series 60 Edition 5 open-source software
Source of Mana is a unique 2D MMORPG
A certain block game
Godot is a powerful cross-platform game engine
A Minecraft Java Edition Launcher for Android and iOS
An open-source sandbox tower defense game
Open source cross-platform multi-purpose game toolkit
A cross-platform PSP emulator
Open-source Android/Desktop remake of Civ V
Stream switch games to your PC via USB or network
UCI chess engine
A simple and easy-to-use library to enjoy videogames programming
Open source HTML5 game framework that offers WebGL and Canvas
Desktop/Android/HTML5/iOS Java game development framework
The game engine for everyone
Open source voxel game engine with support for survival and crafting
RetroArch is a frontend for emulators, game engines and media players.
Sandbox video game with a powerful physics engine
One framework for creating powerful cross-platform games
Multi-platform 2D and 3D game engine
Voxel game-creation platform with easy modding and game creation
Do virtual gear shifting (and more) in any rider app
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Netcode that provides networking capabilities to GameObject workflows
An open source reimplementation of the Among Us Server