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
Do virtual gear shifting (and more) in any rider app
A simple and easy-to-use library to enjoy videogames programming
Xash3D FWGS engine
A certain block game
Desktop/Android/HTML5/iOS Java game development framework
UCI chess engine
The game engine for everyone
RetroArch is a frontend for emulators, game engines and media players.
Open source library for creative expression on the web, desktop, etc.
One framework for creating powerful cross-platform games
Action-adventure game originally released in 2013
Cross-platform game engine in Rust
An open source reimplementation of the Among Us Server
Open source HTML5 game framework that offers WebGL and Canvas
Netcode that provides networking capabilities to GameObject workflows
The source code to VVVVVV
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A dead simple 2D game engine for Go
Multi-platform 2D and 3D game engine
Cocos simplifies game creation and distribution with Cocos Creator
Free, cross-platform 2D game engine powered by Haxe and OpenFL