Okay check this! I have a awesome Idea!
A Icecream Truck floating in the void of space! You have to fight inside the icecreamtruck or you''ll die from lack of oxygeon. OH! and Zombies with jetpacks are trying to get inside and eat you, The Icecream, and the brains stored frozen in the freezers.
Oh and the song it plays can be "Does your chain hang low."
Like from pimp my ride.