I just got an interesting adventure-style map idea. But I will need pistons to be available to maximize it's potential however.
Think of it like an abandoned military base or something sometime in the future. However, the harsh truth is that an alien craft has zombified everyone there, and they mostly come out during the night, and in the underhalls of the compound. It's supposed to be Area-51 themed, but in the future. Some craft are docked on spires as ready-to-launch, others will be strewn about the base, some intact, others destroyed or inoperable.
You start off as a lone marine that was immune to the effects of the new alien craft hidden in base. You, however, were only assigned to serve as a security force to prevent intruders from learning about the base. Now, it's your job to destroy the source of whatever caused all personell to vanish. It will be one of those limited supplies kind of adventures with it's share of problem-solving. You have to bypass classified zones, grab some security keys (redstone torches), and if all else fails, even destroy some things (self-destruct mechanisms, possibly craft still armed with some bombs, stray bombs/fuel rods) or do some acrobatics.
After going through some challenges to get the proper information materials, you learn that you were not the only one that was going after the source of the "plague". One of your ex-comrades has dropped some notes here and there to assist you if you have decided to help out. However, he wanted to make sure nothing else escapes beyond the base, so he locked a bunch of doors. Here's where a mechanic comes to play, The beginning is 'Peaceful', but after breaching the underground, the difficulty changes to easy. After making access to the ship, it now goes into 'normal', and when you get inside the ship, it's 'hard'. After breaching the underground, you'll have to be on the lookout for redstone (torches and dust), because you'll need that to assist with the single block of TNT you find. Long adventure short, you're going to need to setup a pretty long fuse, and place some TNT when you find the alien ship's reactor to detonate it. The more puzzles you solve in the ship, the shorter path you'll have to travel to escape the explosion.
That's something else I want to exploit with the explosion. Instead of a complicated redstone mechanism, and a bunch of TNT blocks all over the ship (lag-fest); instead, I want the internal infrastructure of the ship to have a dirt "insulation" so the TNT has a maximized explosion output throughout the ship so that one explosion triggers the next seamlessly, and also for a convincing explosion chase sequence. It would also force you to use the TNT at the end to destroy the craft; nothing else.
The adventure ends when there's nothing left of the alien craft. Diamonds will be used for score I guess; and a bow will most likely be your primary weapon, as well as a puzzle solver.