hey check out this game called killing floor.
its like a horrer survival game.
its like left4dead but its crazy.
you are with 6 people and you got to stop wave of monsters, and then the last wave is this boss.
and you can give each other money to buy upgrades which you can only do for 45 secs between each wave.
the game is hard to hack, because your not allowed to edit existing content or something only add onto it.]
erm there are servers with like 100 monsters attacking at once.
there are like 8 differenet types of monsters.
the graphics are sweet.
the game does need some update on bugs doe, where peopel can exploit but not many people are keen on cheating becasue its not vsing people, and these are usaully rare in games.
your only see this in servers with 30 people in one game up against 600 monsters in 1 wave.
which is crazy as hell.
game is buyable on steam only. its less then 15 pound so its a great deal.