Solar2D Game Engine main repository (ex Corona SDK)
Native Android app for Habitica
Desktop/Android/HTML5/iOS Java game development framework
One framework for creating powerful cross-platform games
A game engine powered by python and panda3d
Java/JavaFX/Kotlin Game Library (Engine)
The source code to VVVVVV
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Multi-platform 2D and 3D game engine
Voxel game-creation platform with easy modding and game creation
Cocos simplifies game creation and distribution with Cocos Creator
Free game engine for development of desktop, mobile, and web games
Web-based protein structure viewer and analysis tool
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Cross-platform game engine in Rust
A standalone, large scale, open project for 2D/3D image processing
3D Procedural Game Engine Using OpenGL
Gideros Release version
Free, cross-platform 2D game engine powered by Haxe and OpenFL
Play! - PlayStation2 Emulator
New Godot bindings for Swift
3D Game engine with editor
Stride (formerly Xenko), a free and open-source cross-platform C# game
Memory Efficient Serialization Library
Open source library for creative expression on the web, desktop, etc.