Furcadia
From FurcadiaWiki
Furcadia is a free isometric Massively Multiplayer Online Social Game (MMOSG) run by Dragon's Eye Productions.
It permits one to script maps in a simplistic but sufficiently powerful scripting language and then upload these maps onto the official server, where they can be visited by other users. Maps can also be 'patched' to introduce custom furry artwork into the game.
