After you finish the story mode, you unlock
Mushroom Kingdom
I also got a notification saying I've unlocked another area for having over 150 power moons:
The Dark Side of the Moon
I now have about 380 power moons and the odyssey says I need around 100 more for something.
What other areas can I unlock and how many moons do I need to do so?
Best Answer
After you've gotten 500 power moons, you'll unlock the cleverly-named:
Which, like the previous area you unlock, is super difficult. Instead of
You will now have to do a bunch of difficult platforming.