Oh, hey, I broke Survival mode.

I ran out of ammo and ran off to find some more, all panicked like. I noticed as I ran that no new zombies seemed to be arriving on screen. I shot one of the huge horde that was following me and – lo! – a new one appeared.

I tested it some more, running around for ages, leading the slow shambling mass of rotting flesh around the level. No new zombies. Shot a couple in the horde, two more appeared from offscreen.


So it appears that there’s a maximum number of zombies that the game can put in a level and, if you manage to get a load of slow ones, you can simply lead them round the level to your heart’s content.

It doesn’t affect the leaderboards or leveling up your character, as they both appear to be tied to the points that come from killing, but it does allow you to run around for ten minutes to unlock the super gold pistol.

It feels a bit cheap, but it’s an awesome gun. I went back into Survival mode after unlocking it and lasted nearly five minutes using that gun alone. That’s really not bad for a sub weapon. And, yes, I was actually killing zombies that time.