Locked Level

Locked Levels are levels that require a certain amount of collectibles to access on the world map. Debuting in Super Mario 3D Land, they're represented by a large black ? Block. Star Medals are required to unlock these levels. When a level is unlocked, the ? Block gets removed and the preview of the stage appears in its place. At least one Locked Level is present in every world of the game. Locked Levels return in Super Mario 3D World and Super Mario 3D World + Bowser's Fury. They are represented by a Bowser Statue, and require Green Stars to be unlocked. After a level gets unlocked, the Bowser Statue breaks. Collectibles don't get removed after a level is unlocked.

Levels
The following is a list of Locked Levels and their unlock requirements: