Created using a digital projector, a Nintendo wii remote, and several open source software applications.
Now you can paint your Dungeon and Dragons hexagonal maps with the Ipad app Battlemap, and play on it with your plastic figurines. Or just use a homebuilt projector house, like these guys:
As you can see Batman and Robin like to redecorate the Cave on regular basis. But they stay true to one element: their very own and very green Tyrannosaurus. Cool.