Moon (Super Mario Maker 2)

The Moon is a course part introduced in Super Mario Maker 2. It is a crescent moon with a face, which serves as an alternate form of the Angry Sun.

Description
When a Moon is placed in a course in the editor mode, the current theme switches to a 'night' variant with different properties than the normal daytime one. However, after it has been placed once, the night variant of every theme becomes selectable from the menu, and the Moon will not need to be placed again to trigger night mode from that point onward. In addition to unique level effects, nighttime levels have a starry background, with the exception of Ghost House, Airship, and Underwater levels, which have darker versions of their respective backgrounds; a music-box version of the level's music plays instead of the standard one. An 8-bit drum beat, differing slightly depending on whether the game style is Super Mario Bros. or Super Mario Bros. 3, plays while walking in a Goomba's Stiletto (in the Sky theme, only half this beat plays), and the laughing sound that plays while flutter jumping in a winged Stiletto is bit-crushed. The baby sound effect also varies in pitch and may sometimes play the sound of a screaming baby.

In gameplay, unlike the Angry Sun, the Moon does not harm the playable characters upon contact; when touched, it instead defeats every enemy on the screen, similar to a POW Block or a Lucky Star.

The Moon, along with the Angry Sun, is absent in the Super Mario 3D World game style. As such, the night theme is not present in it.