Sloth Online RPG
Sloth Online RPG is a 2D fully graphical online game engine. It features rich tile based maps with layers, fully customizable characters and a completely interactive environment. Also included are resources such as map editors, sprites, tiles, and more.
SlothRPG is open source and is looking for developers as well, please check out http://slothrpg.net for more information and to play the game.
All 32-bit MS Windows (95/98/NT/2000/XP),
All POSIX (Linux/BSD/UNIX-like OSes),
Linux, OS Portable (Source code to work with many OS platforms)