At the "press start" screen press: Right, Left, Up, Down, Right, Down, Up, Right, B.
Agent 9 Invulnerability
At the "press start" screen press: Left, Down, Up, Right, Left, Up, Up, Left, B. Note: You can still be killed by thorns.
Agent 9 Unlimited Shield
At the "press start" screen press: Left, Down, Up, Right, Left, Up, Up, Left, B.
All Breath Types
At the "press start" screen press: Right, Down, Up, Right, Left, Up, Right, Down, B.
Blue Spyro
At the "Press Start" screen press: Up, Up, Up, Up, Down, Left, Right, Down, B.
Defeating Ripto
There are three power-ups (Superflame, Superfreeze, and Lightning). Hit Ripto's cards (one with each power-up), then charge him. Do this three times.
Dragon Draughts mini-game
After defeating Ripto and talking to the elder dragon, Dragon Draughts, the dragon checkers mini-game, will be unlocked and can be accessed from the main menu.
Fairy Magic In All Levels
At the "press start" screen press: Down, Up, Right, Left, Right, Up, Right, Left, B.
Flame Breath
To get your Flame Breath back, collect about ten Fairy things. When you go to a level, Bianica should cast a spell on you. You will then have Flame Breath and Ice Breath.
Map
Hold L and press Select. Note: It will not work on Sheila or Agent 9 levels.
One more hit point
To get one extra hit point for Sparx, just defeat Gulp. A fairy will give it to you.
Sparx Panic mini-game
Complete 100% of the game to unlock Sparx Panic, which can be accessed from the main menu.
Supercharge ability
A fairy will give you the Supercharge ability after you defeat Crush. It allows you to break certain boulders.
Teleport ability
After defeating Ripto, a fairy will give you the power to warp.
Unlimited lives
Press Left, Right, Left, Right(3), Up, Down, B at the title screen. A sound will confirm correct code entry. When game play is started you will only have five lives, but will not lose any.