http://www.vgchat.com/rpg/
You'll have to register and then create an RPG account. Right now there's five places. Once you reach Island Zeekois, that's as far as it goes...until I add more areas.
Oh...did I mention? You'll be able to kill me in the game!! I got 666 HP!!! Good luck not geting destroyed by me!!! :D:D:D