http://cdx-thegame.com/
Dunno if it's good yet - just started playing.
It's fun - but I can't get the case down. Grrr...
Hmm. Apparantly I've played this before - or at least started it. I have a username (unless somebody else used my name) - but it's just says "CDX will commence shortly" and my definition of "shortly" seems to differ from the BBC's.
Nevermind, as soon as I finished typing that, it started. I have played it before. The stupid case stymied me, too. I think I know how to get it, but I couldn't do it. And although it said it saved my progress, it wants me to start again. Boo.
Got the case!