I've actually got a lot of this stuff sketched out. Basically a non-linear FPSRTSGTA-thing. Your ultimate goal is to conquer the world, one territory at a time (territories range in size from a few square miles to entire african nations, depending on the density of valuable things and defensive forces in the real world)
Game starts off with you choosing between two, possibly three main characters to play as. The "leaders" of this "revolution." Things start off small-time, with the main characters alone, in light armor, being dropped by gunship into a city park. Your job is to ice (or capture) one person who know what's going to happen to the world in the coming months. The main characters will bicker back and forth consistantly about how to go about things - but since your character is "point", you get to call the shots. One character wants to take up residence on the roof across the street and snipe the target, the other wants to barge in and make things personal, potentially coming out with them alive and on your side. You can take either course of action, or you can do any of an infinite number of other things, so long as you do it within the time limit allowed by the gunship (which is creating a "distraction" by shooting up a shopping mall a few miles away).
The "maps" are literally a full scale model of the area in contest. You can go anywhere. Drive anything. Do anything. Rob stuff. Kill people. Full and realistic populations are present on each area, and in urban areas, there's no shortage of vehicles that you didn't arrive in. In cities, anyone is a potential combatant, too. Gang members will be common, and may try to defend their turf, depending on how well armed you are. People will respond realistically. If you're dressed in just plain street clothes (you actually configure your full set of gear before each excursion, as well, based on what you've made available through raids and conquering) with no weapons, people will largely ignore you. If you're in SWAT gear with M4's, people will freak out. People may call the police if they see something they don't like, and police response times and strengths will be realistic depending on what that person reports (which may not always be correct)
Anyway, back to the first mission narrative. The gunship will remain on station for approximately 20 minutes After you deal with the target, you need to get to a rendezvous point with the gunship. Either you can let the pilot choose one, or you can use your command map to select one from a vast list. The gunship will naturally have attracted police and military attention during it's rampage, and that response will follow it as it moves to pick you up; but it's fast, and if you choose an LZ intelligently, you can get there before everyone else does and be picked up without much resistance.
Further missions during the "scripted" part of the game will be a series of raids around the world, with the goal of obtaining more equipment to choose from. This will go on for the duration of a normal singleplayer FPS. Your actions and decisions on these missions will power a storyline of love, loss, death, betrayal and a bajillion other things. Currently, I have branches that provide THOUSANDS of ways of reaching 200 distinct outcomes, ranging from which main characters are still alive and willing to cooperate with the campaign, what resources are available, what territories you already control, enemy force strengths, worldwide "readiness" levels, whether the general public knows who you are (and if they do, and they spot and recognize you on the streets, you can expect trouble), if your character got laid or not, etc.
But this isn't the end of the game - you now need to command the takeover of the world, one territory at a time. You can either do this in a typical strategy fashion, or you can actually get on the ground and fight with your men, or you can mix and match to your tastes. Your available equipment will change depending on your actions, and so on and so forth. It is also imperitive that you DO NOT DIE. You can be wounded, and if you have a medic in your group, there is a chance that your squad will be able to successfully arrange for an emergency extraction from the area.There is also the chance that they can't - which is worse than dying. You fall into enemy hands. Even then, the game isn't necciserily over (unless they kill you) - the AI has until the opposing force can remove you from the area to reclaim you (again, without killing you, or without the enemy getting so desperate as to kill you). If you're wounded severely enough, you will be penalized game time, and depending on which main characters are still acting, you will either hold steady or lose varying amounts of territory during that penalized time.
Naturally, this game will never exist - because it requires INSANE amounts of scripting, and furthermore, it requires that the ENTIRE world landmass be modeled. Unless someone wants to fund me
Edit: I missed the "super" part of "supercomputer" - this is just a standard computer game, but I'll be damned if I'm deleting a post that size