We present a method for procedurally creating game worlds, in our case levels for playing zombie survival games. The aim is to randomly create new levels that present new challenges to players, are fun, and “work” as game levels, i.e. look like levels that have been hand crafted. We create the topology, paths to follow, random houses, and hordes of zombies to fight against. Players have to reach an end of the level, fight against zombies, and reach the final objective. The paper describes our approach, and presents an overall evaluation of players of the game.