Forza Horizon 6 is the biggest and most ambitious game in the series, and while it will continue to evolve over the coming years, there's still so much to do from launch.
Alongside collecting all 15 Barn Finds, Forza Horizon 6 also has 9 Treasure Cars. They're similar in idea, in so much as they're hidden and you have to go find them, but executed differently from the Barn Finds.
