i mentioned on mumble about the movie "Cube"
i recommend watching this and the sequel, even if not to get the picture im describing, its still a good movie.
it would make for an interesting adventure map with quite a simple focus on puzzles and traps, as well as pvp elements if wanted....
i would be very keen to help build this, as it would mostly require the building of ONE model room which can be stacked in all directions to form a massive structure of interconnected cubes, each with a different adventure element, like puzzles traps and maze like problem solving, one of the features should be that no doorway will lead back to the room you came from, the use of command blocks and teleporting should make this possible.
this would make for a really sinister adventure map.