Clue
Priority: Low · Expected: Unknown
Clue began back in 2004 as a concept for a mission with infinite replayability, by randomizing the solution (just as with the board game). If I had made it back then, the technical side would have been a nightmare; with today's scripts it should be orders of magnitude simpler.

I don't honestly know if I'll ever get around to finishing this mission, but I still like the concept enough that I don't want to shelve it just yet.
Downloads: When Available... Screenshots coming soon...