Instructions
Begin a multi-player "Tetris Party Deluxe" battle and wait for your opponent to deploy a smoke bomb, filling your game window with smoke.
Lift your Nintendo DS console so that the device is positioned directly in front of your face, with the top screen at approximately eye level.
Locate the microphone on your Nintendo DS console. First-generation Nintendo DS models have a small microphone hole directly below the lower left corner of the device's touch screen. The microphone on later DSLite and DSi models is located in the center of the device's hinge between the two screens while the microphone on the 3DS model is located in the lower right corner of the bottom touch screen.
Blow a gentle, yet continuous, stream of air into the microphone of your Nintendo DS. When the microphone registers the air, the smoke will begin to clear from your screen. Continue blowing into the microphone until all of the smoke has dissipated. Return the device to its normal position and resume play immediately.