checked-no =>Secret Stages: Collect all 45 green crystals in the normal stages to unlock the 14 secret stages. Each normal stage contains one green crystal. To unlock the 15th secret stage, complete all five bonus stages. =>Bonus Stages: Earn 25 gold trophies to unlock the five bonus stages. You can earn these trophies in the normal or mirror mode stages. =>Alternate Marbles/Music: Play through all 45 normal stages and the secret stages to unlock the 20 alternate marbles and all the music tracks. =>Mirror Mode: Complete all 45 normal stages.