scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Godot is a powerful cross-platform game engine
Home theater software and entertainment hub for digital media
An open-source sandbox tower defense game
Stream switch games to your PC via USB or network
A cross-platform PSP emulator
Do virtual gear shifting (and more) in any rider app
A simple and easy-to-use library to enjoy videogames programming
Xash3D FWGS engine
Desktop/Android/HTML5/iOS Java game development framework
A certain block game
Sandbox video game with a powerful physics engine
UCI chess engine
RetroArch is a frontend for emulators, game engines and media players.
The game engine for everyone
Open source library for creative expression on the web, desktop, etc.
Open source voxel game engine with support for survival and crafting
Action-adventure game originally released in 2013
Open-source Android/Desktop remake of Civ V
One framework for creating powerful cross-platform games
Voxel game-creation platform with easy modding and game creation
Open source HTML5 game framework that offers WebGL and Canvas
Cross-platform game engine in Rust
An open source reimplementation of the Among Us Server
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games