Yet Another Game Idea - Escape from New York

I know that it's already been done, but I think there's got to be a better game out there somewhere based on that fine piece of American Trash - Escape From New York.  What got me thinking was reading a thread at some other gaming site where he was talking about a President's Helicopter going down and the group having to fight it's way out of some shithole.  Someone mentioned Escape from New York meets Black Hawk Down.  So why not just do Escape from New York.

For the folks that haven't seen the movie, the premise is that New York was converted to a prison.  The President's plane is taken down and crashes in New York.  A war hero (played by Kurt Russell) is about to go in the prison but he is given a deal to rescue the president.  Hilarity ensues as he wanders through New York.

So anyways, as I was thinking, why not have factions.  There were sort of factions in the movie.  There was the group led by Isaac Hayes.  There was the Brain and Adrian Boobeau.  Then there was Snake Plisken (Kurt Russell).  I think there could be more factions in the game as New York is a big place.

So Snake's role is to get the President out.  He flies a glider into the city and climbs down the World Trade Center to get into the city.  He is armed with a MAC-10 and his wit.

One of the factions will start with the President.  The other factions try to get him.  They want to take him to the sort of bridge between Manhattan Island and the prison control.

In the movie there was a time limit, so I think the game should have some sort of time limit (24 hours was the movie).  I envision each turn representing 30 minutes (giving 48 turns).    There could even be another faction of the Prison Guards who go in if the President isn't out within 20 hours.