Survive is a first person zombie survival shooter set in a procedurally generated open world. The idea of the game is what would you do in the zombie apocalypse. You are put in a random house in a huge completely procedurally generated world. You have to explore the procedural world to find the food, water, and guns you will need to survive the zombie horde.
please do not be fooled by this game, it is just warz but way worse and all of the zombies are the same, i give the author props for giving a good go at the the thought of recreating the feel of a zombie apocolypse, but if you really want to get serious, go get yourself a copy of Arma 2 mod: DayZ.