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