These two guys have written web-based “undead vs. the living” games. One of them, urbandead.com, is a post-zombie apocalypse game where you can play either a human or a zombie. The other is called “Vampires! The Dark Alleyway.” (note – if you join the Vampire game via this link it’ll list my character as the one who turned you into a vampire)
So far I’m not sure if I really like either game, or if I’m going to continue with them at all, but it’s things like this that make me realize just how much can be done with a web browser and programming skills, and how little I’ve actually done myself.
On the other hand, it’s also given me some inspiration for some web-toys of my own… I’ll post more on them once I’ve done some testing…