I love left 4 dead!! I have bought some DLC, but i dont remember which one, but it was definately worth it. And to the person asking if their 8 year old should play this, i would say no, because it is extremely bloody amd could scare him/her. But of course it all depends on the kid and thier maturity level. A little off topic here but do you guys play Dead Rising or State of Decay? Along with left 4 Dead, those are my three all time favorite zombie games