This is a deceptive little game, it starts off nice and easy but as you progress into the levels it becomes much more difficult.
The graphics and sound are nice and simple, different game modes to play too, baby rescue survival, bomb disposal ect. It also has local co-op which is always nice for these sort of games.
Do not be fool by this game. It is a very arcade game. It's not a game that convinces on presentation and visual splendor, but the addictive, varied game play and humorous zombie aliens. For arcade stands, the amount of content is admirable.