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