From the Super Mario Wiki
Trampoline Terror is one of Mario's minigames in Super Mario 64 DS. This game is very similar to Trampoline Time, except Mario must earn points by going through rainbow rings. Both minigames use Super Mario Sunshine's secret level music.
The game begins with a long line appearing at the bottom of the touch screen, turning into a large trampoline. If Mario bounces off it, the carpet will turn yellow, and then red. The third time that Mario bounces off it, the carpet disappears. The player can draw more trampolines using the Stylus, so Mario can bounce off them to get through the rings that appear on both screens. The closer Mario is to the center of a trampoline when he bounces off it, the higher he jumps. Similar to the other trampoline-based minigames, no more than three trampolines can be visible simultaneously.
If a Mario passes through a ring, 100 points are earned. However, if a Mario goes through multiple rings in succession without bouncing off a trampoline, the points will be doubled each time.
Initially, there is only one Mario to jump around. When the player gets 1,000 points, a second Mario clone will appear. Getting 5,000 points creates a third Mario. At 10,000 points, the player will have four Mario clones to manage. If the player gets 20,000 points, a fifth and final Mario will appear.
If the player loses all of his three Lives, the minigame ends, showing the scores.
Only players with superb stylus skills will be able to make Mario bounce through the rings!
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