I'm not really sure if there's a topic about this game but cba to check.
Anyways I think this game is awesome, is there anything better than killing zombies? -Yes there is, killing zombies with your friends :P
When I downloaded the demo I was like, meh it's worth a try but then I fell in love with it.
I don't have the full version yet but I'm going to buy it as soon as I have some extra money.
Here's a wikipedia link:
Anyone else tried l4d? Any comments? :P