Forza Horizon 5 has had 15 million players so far
Forza Horizon 5 managed to attract 10 million players in its first week. This set a new record for the entire Forza series, but also for Xbox-produced games because no other Xbox game in history has had a better launch. After that, Forza Horizon 5 slowed down a bit, but it is still doing quite well - in the two months that the game is available, a total of 15 million players have played it.
This is not the best result for Forza yet, as the previous part was played by 24 million players, but after two and a half years since the launch. Since the game is also available from day one through a Game Pass subscription on Xbox and PC, this result does not mean that the game has sold 15 million copies. Also, the game does not have 15 million active users - that's just the number of all players who have run it at least once.
Anyway, this is a result that shows how the Xbox has a winning horse for the race in the arcade driving genre.