Apologies if this sounds like a bit of self promotion - which it is!! This is my second attempt at making an online game. It's called 'Kinetikz', and it's a physics based game which, hopefully, is quite a bit of fun!
It uses the Box2d physics engine, which is just brilliant. I used the version for Actionscript, but iirc Diggsey has also wrapped it for DBPro, so give it a try.
If you like the game, and want to help me make it popular, at the top right of the game is a 'Digg it' button - please click on it to 'Digg' it. If you haven't used digg before, you'll have to register, but it only takes a moment. I only have one digg at the moment.
Let me know what you all think - if it becomes successful, I'll do a version 2!
You can play it here >>
http://armorgames.com/play/1032/kinetikz