The Polyphonic Spree: The Quest For The Rest

Does anyone know what’s going on here? I can’t figure it out.

LINK [some kind of crazy game, read: viral marketing] (via RealityCarnival)

More about the 24-member “choral symphonic rock” group, The Polyphonic Spree:

LINK [website] ARTICLE [The Polyphonic Spree] (Wikipedia)

Update: Hint: 1st move: click the cactus fruit. (thanks Jordan)