I dont know if you have played this, its called boardgame online and it is... well... a boardgame that is online, is a really interesting game, that will be as long as you set the goal (dont set it a 450, it will take hours and hours).
This is the link: http://www.boardgame-online.com/
It is really hard to explain, because it is complicated as hell (you can even pick classes and stuff!), but it is a really good game to burn some time and have some fun, if somebody is online, we can play one from time to time.
Try it, it is lots of fun, lots of senseless fun