Dead Island has a bit of a mixed reputation. The tropical island of Banoi is besieged by zombies, but the limp story is the thing that really wants to harm your brain. Gun combat is also a bit weak, and having all of your weapons break in the middle of a pack of zombies is a real pain.
With a friend (or three), though, this noggin-bashing playground becomes a hilarious adventure. Bonking a zombie on the head with an oar is tense and lonely, but bring in a friend and it suddenly becomes closer to the jukebox scene from Shaun of the Dead than anything Romero ever put to film.