Make your way up to the top of the hat and spinning Cappy will trigger a small cutscene of appreciation. Your Reward for Reaching 999 Power MoonsSo what do you get after reaching the 999 Power Moon limit? Well, pilot the Odyssey back to the Mushroom Kingdom and you'll see that Peach's Castle is now adorned with a giant top hat.
500 - Gold Mario Costume & Darker Side of the Moon kingdom.Note the caps and costumes must still be purchased from the Crazy Cap Shops for an additional gold coin fee. What Do Power Moons Unlock?Here's a list of what will unlock as grow your tally of Power Moons. Buying those extra Power Moons is going to cost you a lot of gold coins, so here's how you can get rich quick:
In order to max out your Power Moon tally to 999 you'll need to buy the additional 119 Power Moons from the Crazy Cap Shops. How to Get to 999 Power MoonsGrabbing all of the Power Moons using the guides listed above will still only get you to a total of 880. Note: the Dark Side of the Moon kingdom will only unlock once you get to 250 Power Moons, and the Darker Side of the Moon when you get to 500.