2D moon
2D moons, also known as 8-bit moons, are Power Moons found within 2D sections. Having a pixelated 8-bit appearance, these moons can only be collected while Mario is within the 2D section, not allowing Mario to collect them in his normal state even from out of bounds. There is a speedrun that involves collecting all such moons in the game, known as All 2D Moons.
Moons
There are 28 2D moons in the game in total.
| Kingdom | # | Name |
|---|---|---|
| Cascade Kingdom | 4 | Behind the Waterfall |
| Cascade Kingdom | 17 | Hidden Chasm Passage |
| Cascade Kingdom | 35 | Taking Notes: Hurry Upward |
| Sand Kingdom | 9 | Secret of the Mural |
| Sand Kingdom | 10 | Secret of the Inverted Mural |
| Sand Kingdom | 80 | Taking Notes: In the Wall Painting |
| Lake Kingdom | 14 | Taking Notes: In the Cliffside |
| Wooded Kingdom | 6 | Back Way Up the Mountain |
| Cloud Kingdom | 9 | The Sixth Face |
| Lost Kingdom | 6 | Avoiding Fuzzies Inside the Wall |
| Metro Kingdom | 33 | Taking Notes: In the Private Room |
| Metro Kingdom | 36 | Celebrating in the Streets! |
| Metro Kingdom | 65 | Down Inside the Big Screen |
| Snow Kingdom | 30 | Slip Behind the Ice |
| Seaside Kingdom | 8 | Ocean-Bottom Maze: Treasure |
| Seaside Kingdom | 9 | Ocean-Bottom Maze: Hidden Room |
| Seaside Kingdom | 27 | Seaside Kingdom Timer Challenge 1 |
| Seaside Kingdom | 65 | Taking Notes: Ocean-Bottom Maze |
| Luncheon Kingdom | 21 | Beneath the Rolling Vegetables |
| Ruined Kingdom | 4 | Roulette Tower: Stopped |
| Bowser's Kingdom | 31 | Scene of Crossing the Poison Swamp |
| Bowser's Kingdom | 32 | Taking Notes: In the Folding Screen |
| Moon Kingdom | 2 | Along the Cliff Face |
| Moon Kingdom | 34 | Taking Notes: In Low Gravity |
| Moon Kingdom | 35 | Center of the Galaxy |
| Moon Kingdom | 36 | Edge of the Galaxy |
| Mushroom Kingdom | 31 | Secret 2D Treasure |
| Mushroom Kingdom | 32 | 2D Boost from Bullet Bill |