CMU Adventures has hit beta, and you're welcome to create an account and try it out.
http://adventure.alanv.org
It's a "graphical text adventure" set on the Carnegie Mellon campus. Solve puzzles! Fight students! Discover plenty of "not implemented" messages in random places as I continue to work on it!

CMU Adventures Is a lot of fun (if a little confusing at first). Keep up the good work! :D