Just Dance 3 with Katy Perry Bonus Tracks for Wii Includes two exclusive #1 smash hit bonus tracks by Katy Perry  "E.T." and "Teenage Dream" Top of the Chart Hits - Over 45 all-new tracks, featuring a variety of musical genres that will appeal to everyone. New Modes to Extend Game-play - Dance Crew Mode, Smart Shuffle, Flash Mob Mode and Dance Mash-up. Shake Your World - Interact with the in-game environment, be a part of the action, and watch the game respond to YOU as you dance. Just Sweat More - A more advanced training program with calculated Cardio Training