The Princess's Secret Slide is a secret course in Super Mario 64 and its Nintendo DS remake Super Mario 64 DS. It houses two stars; one for completing the course, and the second one for completing the course under twenty-one seconds.
The entrance to the slide's on the first floor, just perching atop the central staircase. It's on top of the door marked "1" which should indicate that only one Power Star should be necessary to enter the level.
In the room behind the door of three identical stained glass windows, all with photographs of Peach on them. The DS version allows for character doors, but the slide itself remains as it was, and it's still accessible via a picture of Peach.
The first star is obtained by simply sliding down the course.
The second star, however, has to be obtained by the course to be completed in twenty-one seconds or less.
- When Mario enters to his right, there is a blue coin block. Hit it and blue coins will become available for the first few seconds of the track.
- It is actually possible to get an extra life (by coin) without the block but this would require collecting all the gold coins.
- Like most secret star courses, Mario can't die just by falling down a bottomless pit
- The second star can be obtained by jumping off of the left after Mario gets past the beginning tunnel which would put someone at around eighteen seconds if done correctly.