Power Star

Power Star
Hitbox Info
Hitbox	cylinder with radius of 80 and height of 50, offset down 0 units
Tangibility radius	1000
Interaction type	Star/Key
Surfaces	none
Related Key, Grand Star
Found In All Courses

Power Stars or Stars are collectible items that measure progress in the game. Star Doors can be unlocked once you reach a certain number of stars, and the infinite staircase will let Mario pass once he has 70 stars. Stars are found in courses; until the game is beaten, Mario must collect the stars from the courses he currently has to proceed and unlock more courses and stars. There are a total of 120 stars in the game.

100 Coin Stars

Main article: 100 Coin Star

100 Coin Stars are special Power Stars that spawn in the main courses when Mario collects 100 coins. Unlike other stars, Mario isn't taken out of the level when he collects it.

Technical information

Height

Every Power Star spawns at a different height from the floor below it.

Mario must be less than 117 units away to collect a star.

Position

Most stars spawn with coordinates that are divisible by 100, although 100 Coin Stars can spawn anywhere. Some stars are always loaded, while some (such as Red Coin Stars and Secret Stars) load during the level at a Star Spawner.

Yaw Velocity (Angular Speed)

Power Stars spawned from a ! Block have a yaw velocity of 1024 angle units per frame (168.75 deg/s). All other Power Stars have a yaw velocity of 2048 angle units per frame (337.5 deg/s). This is because the Power Stars have different behaviors. All Power Stars spin counterclockwise when viewed from above, similarly to a globe.

Storage in memory

Power Stars are stored such that it is impossible to collect more than 120 stars by collecting two of the same star, even if both are yellow.