Wolfenstein is a first person shooter that has zombies as the enemies. For the first few levels it is pretty normal. You are a prisoner in Castle Wolfenstein, which was run by the Nazis during WWII. The first several levels you are fighting Nazi Guards and trying to escape the castle. After you escape the castle, you move on to Operation Eisenfaust where the Nazis are creating mutant soldiers. To kill the zombies you get a variety of weapons. You get a large selection of guns (pistols and machine guns), a rocket launcher, a knife, and yes even the infamous chainsaw. Wolfenstein returned in 2001 with Return to Castle Wolfenstein, and a third game is to be released in 2009.