First of all, I enjoyed the game, I understand some fans prefer harder puzzles but having it easy so that every fan can play is acceptable reason for me. Having said this, on to real question now, sorry if this had been mentioned before.
As far as I know in BTTF universe, first, a time travel has to happen and then the changes take effect. For example in the 1st movie there's "Twin Pines Mall", Marty goes back, runs over one of the pines, and then mall becomes "Lone Pine Mall".
Now in the game I though it was the original Marty. But in the end 3 future Martys come to 1986. Isn't this an indication of we haven't been playing with original Marty? Because someone from the future travels to past.
I know in the first Movie Doc's future self comes back after he had visited future but in Marty's point of view, it doesn't make any difference, he is still the original Marty. But now, 3 future Martys coming back indicate that he is not the original in my opinion. What do you think?