The Stage Select (スロット,Surotto?, lit. "Slot") is a Monitor power-up that appears in Knuckles' Chaotix. When obtained, this power-up will stop the Stage Select Machine.
Monitors that contain Stage Select display an icon depicting a green letter "S" with four yellow and one red lines forming a star on their screens.
The Stage Select only appears in Bonus Stages. In gameplay, when hitting the Stage Select box's item, the Stage Select Machine will slow down next time the player reaches the World Entrance, thereby making it easier for the player choose a specific Stage.