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Here is an awesome map that I made. You are on a random base on Mars and there are zombies everywhere so you have to kill them. (duh)Using cheats for this map is lame. Don't you want a challenge? I can beat it without cheats so you probably can. It's hard though so you won't beat it on the first try. ;) Of course, you can kill the cyberdemon no matter what you do so if the only monster left is the cyberdemon then you win!