3 Adult Marty's from different Timelines that travel from the Future at the End of Chapter 5 from BTTF: The Game.
''Doc!, you've gotta come with me - Back to The Future!''
-what the 1st Future Marty that arrives says to our Doc Emmett Brown.
''What? that timeline was overwritten Five jumps back!''
-what the 2nd Future Marty says to the 1st Future Marty after he talked about Jennifer and their 12 kids.
''You've altered my timeline once too often...!''
-what the 3rd and Last Future Marty says to the other 2 Marty's.
The Future Martys (also be known as the Alternate Timeline Martys or just the Alternate Martys) are all different, futureversions of Marty Mcfly that appear at the very end of Back to The Future: The Game on Chapter 5: OUTATIME; They all seek the help of Doc Brown from 1986H (which is the definitive timeline that the game presents). It is unknown from when they originate, and what happened on their timelines that caused their arrival on this timeline.