Modern AS3 Game Engine
3D .NET engine for Windows, Linux, Mac
Open-source, cross-platform, C++ game engine for creating 2D/3D games
Dragging and Dropping Components for Multi-projection Applications
Brand New "hidden in shadows" game for LÖVE.
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Egret is a brand new open mobile game and application engine
2D physics engine for games
Visual Novel engine, editor and game development.
An Open Engine for use on the OUYA
A free open source Android version of Caravan
Pye - Javascript Engine For Drawing Fast, Fluid and Dynamic Pie Charts
C-Lesh is a game programming language for 2D games.
An Action Adventure Space Physics Game
cross-platform 2d game engine
Cross-platform 2D game engine
2D Graphics Library