Here’s how it works - a user describes a band or artist they are familiar with, anything from a biography of said band, to personal stories such as gigs attended or favourite albums. Other users can then claim familiarity with the band, OR can accuse the original poster of making the band up. The original person then has to either prove the bands existence or admit they were lying. People who make correct accusations win points - those who get it wrong are ELIMINATED.
Would this work?