Underground CD Volume 3 Game System: Sony Playstation Cheat Category: Hint Game Company: Unknown Game Category: Unknown Hint, Cheat, Walkthrough:   Underground CD Volume 3 Machine Hunter information: Press Square, Triangle, Circle Square at the "Vault" screen of Disc 1. Spawn preview: Press Triangle, Circle, Triangle, Circle at the main menu of Disc 2. Crash Bandicoot 2 preview: Press Circle, Triangle, Square, Circle at the main menu of Disc 2. Blasto preview: Press L1 + L2 + R1 + R2 at the main menu of Disc 2. PlayStation second birthday FMV sequence: Press Triangle, Circle, Square at the "Event Center" screen of Disc 1. View Helene Sheeler: Hold Square + Circle and press Triangle(2) at the "Code Archive" screen of Disc 2. Toggle music: Press Start at the main menu of Disc 2.