Video Game / Rock Band World

Rock Band World is the companion Facebook app note  to Rock Band and Rock Band Blitz; more so the latter because the app seems much more tailored to it than the former. In this, you can link your accounts to track your progress, challenges others to Score Wars, and complete goals which earn you coins. The latter one is the most notable, as they are both fun and pretty Troperiffic. There are three types: Standard difficulty based goals, Scavenger Hunt goals, and Community goals (They require everyone get a certain number of stars by the end of the week, with varying degrees of success. A goal related to American Pie was completed within a day), created by either Harmonix or by users on the official website.

Tropes demonstrated by the goals

http://tvtropes.org/pmwiki/pmwiki.php/VideoGame/RockBandWorld