RetroArch is a frontend for emulators, game engines and media players.
A cross-platform PSP emulator
Godot is a powerful cross-platform game engine
Open source voxel game engine with support for survival and crafting
The game engine for everyone
Stream switch games to your PC via USB or network
Sandbox video game with a powerful physics engine
Xash3D FWGS engine
A simple and easy-to-use library to enjoy videogames programming
UCI chess engine
Open source HTML5 game framework that offers WebGL and Canvas
Desktop/Android/HTML5/iOS Java game development framework
Home theater software and entertainment hub for digital media
One framework for creating powerful cross-platform games
Open-source Android/Desktop remake of Civ V
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Voxel game-creation platform with easy modding and game creation
An open source reimplementation of the Among Us Server
Netcode that provides networking capabilities to GameObject workflows
The source code to VVVVVV
New Godot bindings for Swift
Do virtual gear shifting (and more) in any rider app
Open source library for creative expression on the web, desktop, etc.
Multi-platform 2D and 3D game engine