Godot is a powerful cross-platform game engine
An open-source sandbox tower defense game
A certain block game
RetroArch is a frontend for emulators, game engines and media players.
A Minecraft Launcher which is multi-functional, cross-platform
A simple and easy-to-use library to enjoy videogames programming
Open source voxel game engine with support for survival and crafting
Xash3D FWGS engine
Stream switch games to your PC via USB or network
A cross-platform PSP emulator
UCI chess engine
Sandbox video game with a powerful physics engine
Open source cross-platform multi-purpose game toolkit
Open source HTML5 game framework that offers WebGL and Canvas
Desktop/Android/HTML5/iOS Java game development framework
Open-source Android/Desktop remake of Civ V
Home theater software and entertainment hub for digital media
The game engine for everyone
The source code to VVVVVV
One framework for creating powerful cross-platform games
Cocos simplifies game creation and distribution with Cocos Creator
Set of Python modules designed for writing video games
Netcode that provides networking capabilities to GameObject workflows
Do virtual gear shifting (and more) in any rider app
Voxel game-creation platform with easy modding and game creation