Desktop/Android/HTML5/iOS Java game development framework
Open Source MMORPG Framework
2D Game Engine
A cross platform Lua based game engine
A real-time game development platform
Cross-platform 2D and 3D game engine
Build Cross-platform Applications
The Old PacMan! programed over the Salvat Game Fabric platform
Open-source, cross-platform, C++ game engine for creating 2D/3D games
2D game engine for traditional platform games
Open Game Bootstrap
3D Game Engine
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Cross platform Game Creation Software
Gorgon Game Engine (GGE) is a C++ game engine that handles many tasks.
Cross-platform C framework very compact libraries and tools.
A generic 2D engine for any kind of game
Multi-threaded 2D Renderer licensed under the Mozilla Public License
A retro style video game engine for RPGs and adventure games.
A truly extensible cross-platform game engine
A very small multi-platform game engine for creating desktop games.
cross-platform 2d game engine
Cross-platform reimplementation of AMOS BASIC (runtime)