Godot is a powerful cross-platform game engine
A simple and easy-to-use library to enjoy videogames programming
Desktop/Android/HTML5/iOS Java game development framework
A Minecraft Java Edition Launcher for Android and iOS
Xash3D FWGS engine
A certain block game
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Zero Hour running natively on macOS, iPhone & iPad
One framework for creating powerful cross-platform games
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Cross-platform game engine in Rust
Cocos simplifies game creation and distribution with Cocos Creator
RetroArch is a frontend for emulators, game engines and media players.
Open source HTML5 game framework that offers WebGL and Canvas
The game engine for everyone
A dead simple 2D game engine for Go
Do virtual gear shifting (and more) in any rider app
The source code to VVVVVV
Open source library for creative expression on the web, desktop, etc.
Multi-platform 2D and 3D game engine
Popular Roblox executor
3D Engine c++
3D modeler, 3D game maker, 3D demo maker