Tick Tock Clock

Tick Tock Clock is a level in Super Mario 64 and Super Mario 64 DS. The level is based on the inside of a clock. Many of the obstacles in the level are parts that you would find in a real life clock. If you jump in at 12 o'clock, the clock parts are stationary, and if you don't, you get thrown in at the deep end, making your work significantly harder. So it's recommended you jump in when the clock face reads 12 o'clock.

In Super Mario 64 DS, the clock is surplus to requirements if you want any, and all, of the stars available, as there are ways of getting every single star in the level without the assistance of the clock moving.