I've started a new game called Zombie Nation MUD http://znmud.com/
It's a free game that centers around Zombies!! What else? :) I would love to see all sorts of creative submissions to this project. The source code to the game as well as the stories and artwork are all under the GPL or the Creative Commons license.
I'm looking for writers, artist, music, whatever. If you submit it to me I'll do my best to put it somewhere on the wiki http://wiki.znmud.com/ or you can create your own wiki account start contributing!
The game engine is still pre-alpha but I hope to have a stable release shortly.
Enjoy!!
Craig