well
ok this game has good graphics and violence but it lacks of story. Only killing and killing hordes of zombies is REALLY repetitive, also when you have the ultimate machinegun (the quick charge one) is sooooo easy (1 hit kills, recharge in 0.33333333 seconds, etc) I would recomend something more, like a boss or missions or STORY and a zombie blood cleaner would be really helpfull (i dont know a zombie washing the floor each day would be great XP)