I have an idea for a map. Using most of Forge World, make a "zombie world" kinda thing, with safe houses placed around the maps, with different vehicles and weapons lying around, and a lot of open space. Best played with a lot of people.
Make sure you don't name it Zombie World. Call it Zombieland and include scenes from the movie. Including, but not limited to; an amusement park and Bill Murray's house.