On the official Facebook page for Just Dance 3, a new app called “welcome” invites fans to check out new video content and enter to win tickets to meet Katy Perry. Fans can also enter to win a sweepstakes and win prizes like an “I heart Just Dance” t-shirt, branded sunglasses and headbands. Browse through gameplay videos featuring songs from artists like LMFAO, Britney Spears, Rhianna and Barbra Streisand.