Godot is a powerful cross-platform game engine
The game engine for everyone
Orx: Portable Game Engine
Cinema Enters Game Console
2D Game Engine
Sdk library for creating 2048 game in c#.
A cross platform Lua based game engine
Cross-platform 2D and 3D game engine
Android OpenGL Game Engine
Build Cross-platform Applications
Multi-threaded game engine for Android
3D .NET engine for Windows, Linux, Mac
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
C-Lesh is a game programming language for 2D games.
cross-platform 2d game engine
A cross-platform OpenGL based lightweight scenegraph library
Cross-platform 2D game engine
A powerful cross-platform and open-source 3-D rendering engine.