Desktop/Android/HTML5/iOS Java game development framework
The source code to VVVVVV
Satisfying monster shooter
Java/JavaFX/Kotlin Game Library (Engine)
Open source HTML5 game framework that offers WebGL and Canvas
Open-source engine for Heroes of Might and Magic III
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
UCI chess engine
Cross-Platform C++ 2D/3D game engine
One framework for creating powerful cross-platform games
An open source reimplementation of the Among Us Server
Solar2D Game Engine main repository (ex Corona SDK)
The game engine for everyone
Cross-platform game engine in Rust
Home theater software and entertainment hub for digital media
Kotlin extensions for the libGDX game framework
Accuracy-focused XNA4 reimplementation for open platforms
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Netcode that provides networking capabilities to GameObject workflows
Gideros Release version
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Action-adventure game originally released in 2013
Embeddable unity game engine view for Flutter
A MUD client for Android, iOS, Linux, Mac OS X and Windows