Misc. Codes:
Enter the following codes at the main menu:

Hold L1 + R1 and press Triangle, Down, Down, Circle, Up - Display Turbo Counter

Hold L1 + R1 and press Down, Circle, Triangle, Triangle, Right - Spyro 2 Demo

Hold L1 + R1 and press Left, Right, Triangle, Down, Right, Down - Pinstripe

Hold L1 + R1 and press Triangle, Right, Right, Circle, Left - Super Turbo Pads

Hold L1 + R1 and press Down, Circle, Left, Left, Triangle, Right, Down - Komodo

Hold L1 + R1 and press Right, Right, Left, Triangle, Right, Down, Down - More Tracks

Hold L1 + R1 and press Left, Triangle, Right, Down, Right, Circle, Left, Left, Down - Papu Papu

Hold l1 + R1 and press Down, Left, Right, Up, Down, Right, Right - N. Tropy

Hold L1 + R1 and press Triangle, Right, Down, Right, Up, Triangle, Left - Unlimited Bombs

Hold L1 + R1 and press Down, Right, Triangle, Down, Left, Triangle, Up - Penta Penguin

Hold L1 + R1 and press Right, Circle, Circle, Down, Up, Down, Right - Ripper Roo

Hold L1 + R1 and press Up, Up, Down, Right, Right, Up - Invisible Racer

Hold L1 + R1 and pres Up, Up, Down, Right, Right, Left, Right, Triangle, Right - Scrapbook Mode

Hold L1 + R1 and press Left, Triangle, Right, Left, Circle, Right, Down, Down - Unlimited Masks

Hold L1 + R1 and press Down, Right, Right, Down, Down - Unlimited Wumpa Fruit

Hold L1 + R1 and press Up, Down, Down, Right, Right, Down, Down - Slide Coliseum

Hold L1 + R1 and press Right, Circle, Triangle, Left, Down, Circle, Triangle, and Left - Unlock N. Oxide

Unlockables:
Lab Basement Complete Adventure mode on Hard

North Bowl Complete Adventure mode on Medium

Parking Lot Complete Adventure mode on Easy

Scrapbook Mode Beat Nitros Oxide's ghost on every track.

N. Tropy Beat N. Tropy's ghost on every track.

Fake Crash Beat the Purple Gem Cup in Adventure mode.

Pinstripe Win The Yellow Gem Cup In Adventure

Fake Crash Win The Purple Gem Cup In Adventure

Turbo Track Obtain All 5 Gems

101% Completion Beat Adventure With All Gold Or Platinum Relics

Red Gem Cup Collect All 4 Red CTR Tokens

Green Gem Cup Collect All 4 Green CTR Tokens

Blue Gem Cup Collect All 4 Blue CTR Tokens

Yellow Gem Cup Collect All 4 Yellow CTR Tokens

Purple Gem Cup Collect All 4 Purple CTR Tokens

The North Bowl Win All 4 Arcade Cups On Medium

Lab Basement Win All 4 Arcade Cups On Hard

Ripper Roo Win The Red Gem Cup In Adventure

Papu Papu Win The Green Gem Cup In Adventure

Komodo Joe Win The Blue Gem Cup In Adventure

Parking Lot Win All 4 Arcade Cups On Easy.

Alternate Ending Collect all relics before defeating Nitros Oxide

Unlock N. Trophy's ghost:
When you beat a time in time trials N.Trophy's ghost will appear, each track has it's own time.

Unlock Nitros Oxide's Ghost:
When you beat N.Tropy's ghost, Nitros Oxide's Ghost will replace him.