Repetitive Levels. No "restart game" option. No Save/Load possibilities during playing (only when leaving). If 1 or 2 zombies get to your tents it is game over. But due to the missing "restart game" option you have to watch and wait, till the base is torn down. Obviously the developer here has his own kind of humour and is not interested in his customers gaming experience. The campaign itself is generic and downright boring. It is really sad, if you think about what a potential this game would have had.