The Gravity Control Switch's design differ between game, though a common feature they share include a display showing arrows pointing in the direction of gravity. They are found in space-themed Zones, including those exclusive to the Space Colony ARK.
In gameplay, the player can use the Gravity Control Switch to change the direction of gravity. When interacted with, the gravity in the Stage is flipped in the direction of the arrows displayed on the Gravity Control Switch, causing the player to immediately fall with the flow of gravity. This allows the player to walk on walls and roofs where necessary paths are found, or even control the direction of their descend through midair. Using the Gravity Control Switch also affects other objects in the room, allowing for easier navigation.
Sonic & Knuckles
First appearing in Sonic & Knuckles, light blue Gravity Control Switches with yellow arrows are featured at Death Egg Zone Act 2. In this game, it exclusively reverses the gravity on the Zone. To use it, the player can simply jump on top of it as with any other switch in the game.
Sonic Adventure 2
In Sonic Adventure 2 and Sonic Adventure 2: Battle, the Gravity Control Switches resembles large red computer panels with a footing marked with a triangle in front of it, and a large yellow lever below the screen. The computer screen is black and shows green arrows. In this game, the Gravity Control Switches only appear in Sonic's version of Crazy Gadget. To use it gameplay, the player has to press while standing in front of it.
Sonic Advance 2
In Sonic Advance 2, Gravity Control Switches share the same appearance from Sonic Adventure 2 and are placed upwards or backwards on the ceilings in Egg Utopia. When passing through one, it changes the playable character's gravity. Sometimes, in order to walk on the ceilings, the player has to just touch Gravity Control Switches on ceilings from the ground to reverse gravity.
Shadow the Hedgehog
In Shadow the Hedgehog, Gravity Control Switches resemble thick, green tubes with pointy ends and yellow arrows running down it. In this game, they only appeared in Space Gadget and can be triggered when touched. However, there are some equipped with a green ring that helps the player activates them without touching the switch itself.