WarioWare: Twisted! Screens

Each game pak is equipped with a gyro sensor that detects sideways motion
There are a few screenshots from WarioWare: Twisted!, a DS title which will also be available in may. In the game, Wario enlists his team of developers from WarioWare, Inc. to create a whole new slew of hilarious, spin-controlled microgames. This means you can control the gameplay by rotating the GBA SP left and right. Check the factsheet too.