Multi Theft Auto is a game engine
Solar2D Game Engine main repository (ex Corona SDK)
The world is no longer the same
A fast, scalable, distributed game server engine/framework for C++
A mobile game distributed server implemented using netty4.X
Game engine allows you to create own MMORPG
A 3D game engine in java.
2d/3d Game Engine
Java decentralized cross-platform network multiplayer game engine
A 2D Adventure Game & Engine
Browser game engine
Cross-platform 2D game engine
Free MMORPG Engine. Develop and host graphical browser-based games.
Zap Engine