Open Source MMORPG Framework
A free 3D game engine to create games and realtimes scenes for Windows
Lego Island 2 Game Editor
IRB is a game creation toolkit
A starter development kit that let you develop FF6-like games on PC.
Pear3DEngine is a modern and modular 3D development framework
Cross-platform 2D game engine
An extensible game engine that targets RPGs.
A generic C++ MUD server featuring a strategy-style hexagon map