Godot is a powerful cross-platform game engine
Open source voxel game engine with support for survival and crafting
RetroArch is a frontend for emulators, game engines and media players.
Open source HTML5 game framework that offers WebGL and Canvas
Stream switch games to your PC via USB or network
One framework for creating powerful cross-platform games
Xash3D FWGS engine
Open-source Android/Desktop remake of Civ V
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A cross-platform PSP emulator
The source code to VVVVVV
A simple and easy-to-use library to enjoy videogames programming
Desktop/Android/HTML5/iOS Java game development framework
Sandbox video game with a powerful physics engine
An open source reimplementation of the Among Us Server
UCI chess engine
A dead simple 2D game engine for Go
Home theater software and entertainment hub for digital media
Netcode that provides networking capabilities to GameObject workflows
The game engine for everyone
Do virtual gear shifting (and more) in any rider app
An iOS & tvOS Frontend for Multiple Emulators
Open source cross-platform multi-purpose game toolkit
New Godot bindings for Swift
Free, cross-platform 2D game engine powered by Haxe and OpenFL