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Playstation - Underground CD Volume 3-3 cheats

Display R-Type Delta codes
Hold L1 + L2 + R1 + R2 and press Triangle, Circle, or Square buttons 
at the main menu of Disc 1.

Enable background music
Press Start at the main menu of Disc 1, then use Left or Right to 
enable/disable the background music. Push X to go back to the main menu.

Underground CD Volume 3-3 Game Shark Codes:
              
Pac-Man World Codes         

Unlimited Pac Dots           
801358B0 000A
              
Unlimited Lives              
801358AC 0006
              

Spyro 2: Ripto's Rage Codes 

Unlimited Super Fire Meter   
80070278 0334
              
999 Gems                    
80075434 03E7

99 Energy Orbs              
8007543C 0063