More on my Superhero skyscrapers.
Here you can see the original tower completed. The second roof, a multi-level layout, is under construction. Play would span across both roofs simultaneously, with anybody falling (or being knocked off) being removed from the game. I'm planning some small accessories such as skylights, some sort of rooftop access obsticle, maybe some A/C units and conduits or a catwalk between the two buildings (all removeable so they can be utilized as a weapon or thrown). I might make the upper level of the split-level a helicopter pad. Oh, and a construction crane, gotta have a construction crane that can swing around and knock heroes off.