the_bard: I can't decide if it's worth $2.99. I read all you do is camp and fight waves. And there was several people on the steam forums whinging about the sale cause it brought in n00bs.
Snickersnack: It is just camping and waves. 6 idiots vs many hundreds of zombies. A good game is VERY tense. :)
noobs do make the game more difficult. Health & enemy count scales with the number of players. If you get a couple of new guys joining a high difficulty server you'll probably wipe. That's okay though, surviving isn't really the point.
Revisor: Killing Floor is an OK time waster but it has that annoying Counterstrike mechanic where you earn money in a round and you can buy better weapons with it, but the next round you're broke and without a gun again.
Also it has a much too large recoil for my taste.
But for 3 dollars feel free to try it.
'
Meh, I guess for 3 I can give it a shot.