In Davesprite’s timeline, before he goes back, Dave says:
John and Jade dying meant that Bec wasn’t prototyped and Bec Noir was never created.
In this time line, the trolls succeeded in beating their game and were allotted their final prize because Jack didn’t exist to interfere at the final moment.
but if these are the ancestor trolls, the ones that were before the scratch. in order to create the first set of trolls (i.e. karkat, terezi, etc) wouldn’t the ancestor trolls have to make the scratch to reset the game?