xLua is a lua programming solution for C#
An MVVM & Databinding framework that can use C# and Lua
Free, cross-platform 2D game engine powered by Haxe and OpenFL
One framework for creating powerful cross-platform games
Multi-platform 2D and 3D game engine
Desktop/Android/HTML5/iOS Java game development framework
Cross-platform game engine in Rust
Orx: Portable Game Engine
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
High performance, cross-platform machine learning for Unity Engine
Accelerate cross-platform MR app development in Unity
Cross platform SDK
Reactive extensions for Unity
The Atomic Game Engine is a multi-platform 2D and 3D engine
Science Fiction, heavy assault, disestablishment of power.
2D physics engine for games
Hungry Hero is an open source Flash game built on Starling Framework.
Cross-platform 2D game engine