best game
this is honetly one of the best games ive played its so addicting. my bakc is killing me because i sat here for hours playin its just a never ending game of fun. my favorite thng was when u choose the box level kill zombies untill you get the barrel upgrade and then just block the entrances with barrels and then when the zombies come BOOOOM let them have it. and then go quick and block the entrance again. easiest way to get upgrades is like that