Wanted!

From the Super Mario Wiki

Wanted! is a Super Mario 64 DS mini-game where the player has to find a certain character (Mario, Luigi, Yoshi or Wario) in a large crowd. The farther the player gets, the harder the stage will become, there also will be more icons, and even moving icons. The player gains time by tapping the right icon, but also losing time when tapping the wrong character, the most time the player can get is 50 seconds, once the player looses all that time the game ends.

The player must tap the character with the Stylus. This mini-game later appears in New Super Mario Bros.

[edit] In-Game Instructions

It's easy to get lost in a crowd! Find the one who disappeared and touch him. There he is!