Super Mario 64 Official Wikia

Switch Stars are a special type of Switch exclusive to Super Mario 64 DS. These Power Stars only appear for a limited time inside a Star Sphere. Star Switches resemble yellow stars and have an exclamation mark imprinted on them. They appear in ten of the fifteen main courses, where they are necessary for one of the seven course missions respectively. Each of these missions has the term "Switch Star" somewhere in its name. Five more Star Switches can be found in the other levels. Fifteen Switch Stars can be found throughout the entire game. Most of them require only Wario to be collected, as the Star Switch, or the actual Star itself is usually obstructed by some sort of strong material that the other characters are not strong enough to break.

Any playable character is able to activate the Star Switches by stepping on them. Once activated, they will make a Power Star appear in a Star Sphere within the same level. The Power Star only remains there for a short time, so the player needs to hurry in order to reach the star in time, or else they will have to press the Switch again. The time limit varies depending on the respective switch.

Switch Star Locations

The following is a list of the Switch Star locations, the names of the missions, where they are located, and how to get them.

Course Stars Locations
Whomp's Fortress
Switch Star of the Fortress
In an alcove below the Bomps. The Switch is hidden under a Brick Block accessible to anyone, but Yoshi.
Jolly Roger Bay
Switch Star of the Bay
Behind a rock in the underwater cave with the falling stone pillars, near where the third Star is located only accessible by Vanish Luigi.
Cool, Cool Mountain
Switch Star of Cool, Cool Mountain
On a floating isle near the lift that connects the snowman head area with the penguin pond area.
Big Boo's Haunt
Switch Star in the Basement
In the shallow water outside the merry-go-round in the basement. The Switch is located under a Black Brick Block that only Wario can break.
Hazy Maze Cave
Underground Switch Star
Under a Black Brick Block in a corner of the Elevator Area.
Shifting Sand Land
Tox Box Switch Star
On the course roamed by Tox Boxes above a field of quicksand. The Switch is located under a Black Brick Block.
Dire, Dire Docks
Koopa Surfin' Switch Star
Near the access point of the level, on a small shoreline. The switch is located under the middle of the three Black Brick Blocks.
Tiny-Huge Island
Switch Star on the Island
In the cave underneath the area where Wiggler is fought in.
Tick Tock Clock
The Pendulum Switch Star
On the platform patrolled by a Heave-Ho and two Goombas, near the two large pendulums.
Rainbow Ride
Switch Star of the Manor
On the far end of a wooden platform, outside of the giant floating manor, where the second Star is.
Goomboss Battle On a long platform next to the huge caged shaft, only accessible by Mario's wall-jump.
The Secret Under the Moat On a remote area opposite the large slope at the beginning, accessible by either Mario's balloon ability or wall-jump.
Bowser in the Dark World Behind the Warp Pipe that leads to the boss battle with Bowser.
Bowser in the Fire Sea On top of the obstacle course with the rising and sinking grid platforms near the end of the level.
Bowser in the Sky On the far end of the platform underneath the first set of ferris wheel platforms.