After day 10 the difficulty skyrockets. I really like this game but it has some problems. My biggest complaint is that higher level shotguns never show up in the store. I'm on day 13 and I still have the starting shotgun.
Not worth my time. Boring and tedious without the option to skip ahead to just before you died. Music is annoying and repetative. The voice acting takes itself too seriously. And I hate how people in these games act like they've never heard of zombies. 2/5