Access Nitros Oxide's Space Ship
To unlock the Nitros’ spacecraft, you must possess four Boss Keys
Blizzard Bluff: Shortcut
Immediately past the start/finish line is a channel through the rocks that allows you to cut across and miss the first left hand turn. A mask obviously makes this faster, so the snow will not slow you down.
At the first frozen lake, power slide left and jump over ravine. You will land just past tunnel bridge. A mask helps here, but is not necessary.
After making the right hand turn after the tunnel bridge, look on your left. There is a channel through the rocks that cuts across the left hand curve. With a mask, you can hit the hill on the right side of the passage and jump the guardrail to cut across.
Cortex Castle: Shortcut
While racing on Cortex Castle, shortly after the two spiders and past the flight of stairs, you will see a path that goes up into the castle. Go to the far right side and drive diagonally left, up the hill. When you get to the very peak of the hill, jump and you should land on a path that is cut off from the main raceway. This trick is hard to do but is extremely effective.
Crash Cove: Shortcut
Near the beginning of the track is a ramp with two fruit boxes at the end of it, just before a small lake. Stay to the right of the ramp and begin turning left toward the mountain once you pass the ramp. You will be driving through the lake. You will have to practice this, but it dips right before you would run into the mountain. As your head goes completely underwater, hold Jump. You will jump onto the shortcut and can pick up a box before jumping back down and rejoining the race near the bridge. You can begin your turn when you pass the single star on the ground just to the right of the ramp. You will be jumping onto the land that is connected to the bridge that you drive under which leads out to that boat to your right.
Turn left immediately after the first jump when you land in the water. Jump at the very left edge of this pond. You will land on a ledge which allows you to gain a second or two of time. This is very difficult to perform, and requires practice to get the correct. It is the only way to get the "T" on the Crash Cove CTR Challenge.
Dodging Homing Rockets
Look for a wall to hide behind.
Place a Poison Potion, TNT Crate, or throw a Bowling Bomb at the last second. Note: If done with Nitro Crates, the explosion will hit you. If you have one, drop it moments before and continue in a straight line.
Try to hide behind other player.
Jump at the last second. The rocket will explode, but it will not damage you. Recommended for experts only.
Power slide from left to right frequently. If done correctly, the rocket will miss you and hit the wall or other players.
Fire a rocket backwards. As the player who launched it to you was the nearest, the nearest player to you may be him. The rockets may crash with each other.
Dragon Mines: Shortcut
About a quarter of the way through the race is a railroad track with coal cars on it that go to the right. Follow the coal cars into the tunnel in the side of the wall, then follow the railroad track until it appears at the middle section of the track. You will get run over by the coal cars, but you will still end up ahead.
Before the end of the lap is a blue brick road and sand. Instead of going through the sand, cut through the blue brick road with a mask and go to the finish line.
Get Bonus Tracks Easier
At the title screen ( where you choose adventure, arcade, VS etc. ) hold L1 + R1 and press, right, right, left, triangle, right, down, down. You will hear a sound. This unlocks three battle arenas and one race track.
Get N Trophy
Finish the Roos Tubes level using time trial mode
Get Spyro the Dragon 2 Demo
At the main or new game screen hold L1 + R1 and press Down, Circle, Triangle, Right
Get TNTs Off Your Head
When a TNT lands on your head press R1 repeatedly. If done correctly, the TNT will fall off in time. If you wait too long you will wipe out.
Get Unlimited Bombs and Rockets etc.
First you need to get unlimited bombs by going to the main title screen and holding R1+L1, then press triangle, forward, down, forward, up, triangle, back. Then during a race, you will need to run over a red potion bottle, then you will lose your unlimited bombs. Next you will have to drive into a question mark box and whatever you get will be unlimited for that race.
Hot Air Skyway: Shortcut
Apart from the obvious piece of track in the first jump, if super turbo pads are enabled, at the last big jump (where a blimp is across), jump at the last second to your right side. If done correctly, you will be at the entrance of the blimp, in front of the start line.
Infinite Masks
To get infinite masks, hold L1 + R1 at the main menu and press left, triangle, right, left, circle, right, down, down. If done correctly, you will hear a sound. As far as I know, this code does not work in adventure mode.
Infinite Wumpa Fruit
Hold L1 + R1 at the main menu and press down, right, right, down, down. You should then hear a sound confirming correct entry.
Invisibility
At the title screen hold L1 + R1 and press up(2x), down, right(2x), up. All non-computer characters are now invisible.
Komodo Joe
At the title screen, hold L1+R1 then press Down, Circle, Left, Left, Triangle, Right, Down. You should hear a sound and can drive as Komodo Joe.
Lab Basement
Win Every Cup Under Hard Diffculty In Arcade Mode.
Mystery Caves: Shortcut
There is a shortcut that can be used with a mask. Immediately following the first sandtrap/jump area, turn left with a mask activated. This leads through a stalagmite-stalactite area that shortcuts a long curve.
N. Oxide
To unlock N. Oxide as a playable character, not only do you need to defeat him in all the time trial levels, you also need to complete the game 100% (complete all cups in arcade mode, complete adventure mode, have all relics, all gems, all ctrs etc.) You cannot play as him in adventure mode. He is the fastest racer by far and he seems to have perfect speed, acceleration, and turning.
N. Tropy
At the title screen, hold L1 and R1. Press down, left, right, up, down, right, right. You should hear a sound, and now you may drive as N. Tropy.
New Battle Arenas
Use the arcade 1 player mode to finish the easy, medium and hard difficulty to get up to 4 new arenas.
Papu Papu
At the title screen, hold L1+R1 then press Left, Triangle, Right, Down, Right, Circle, Left, Left, Down. You should hear a sound and be able to drive as Papu Papu.
Parking Lot
Win Every Cup Under Easy Diffculty In Arcade Mode.
Penta Penguin
At the Main Menu, hold L1 + R1 and press Down, Right, Triangle, Down, Left, Triangle, Up. If done correctly, you will hear a sound.
Pinstripe
At the title screen, hold L1+R1 then press Left, Right, Triangle, Down, Right, Down.
Playable Spyro The Dragon 2 demo
Hold L1 + R1 and press Down, Circle, Triangle, Right at the main menu. A sound will confirm correct code entry.
Polar Pass: Shortcut
There is a wall before the jump at Polar Pass. Enable the "Unlimited masks" code and use it before the wall to jump over it.
When you travel through the cave near the end of the race you will see a wall with arrows pointing to the right. Go straight ahead and jump off the very peak of the hill. Take the sharpest turn possible to the left and you can go cut a lot of time off your run.
Enable the "Super turbo pads" code. Get to the turbo pad before the little jumps with pads. Go on the pad, then slightly bump into the wall and hop while turning right. You will go on the other side. You will have a 50% chance of making the jump on staying on the track.
When you are in the cave/tunnel, you can jump over the yellow and black arrows instead of doing that sharp corner. This will allow you to gain time.
Note: You do not need a mask for this shortcut, but it helps. At the first frozen lake, there are two open spaces on the left. If you take the first one, you will need a mask but it puts you fairly far ahead. The second one is slightly slower, but it will most likely move you up a few positions.
Purple gem cup
Collect all four purple coins in the crystal levels of adventure mode. You will unlock a new driver names Fake Crash in time-trial mode, battle mode, and arcade mode.
Quick Draw
When you run into a question mark box, press the "O" button and your weapon will appear faster. You have to wait a little bit (about a second) to press the button. This code helps a lot in battle mode and could give you an edge.
Race as Ripper Roo
Hold down the L1 and R1 buttons at the title screen, then press Right, Circle, Circle, Down, Up, Down, Right.
Scrapbook
At the title screen, hold L1 + R1 and press up(2x), down, right(2x), left, right, triangle, right. The "Scrapbook" is now an option at the main menu.
Slide Coliseum: Shortcut
There is a very sharp turn at Slide Coliseum. Get a Mask or Speedburst. Use the little hill as a ramp and jump over it. Drive straight and you will be at the end of the turn.
Spinning out
When you are super sliding make shure you dont hold the direction you are sliding because you will spin out.
The North Bowl
Win Every Cup Under Medium Diffculty In Arcade Mode.
Tiger Temple second short cut
When you get to the first tunnel, use the hills to go to the other side. Note: This may require accurate jumps.
Tiger Temple: Shortcut
Half way through the track where the radar shows the shortcut is a spot on the wall that has two rows of rectangles, with one row above the other. Both rows have five rectangles. The rectangles are positioned long ways up and down. Hit the wall and it will open.
Unlocked N.Trophy
Hold R1 and L1 and press: down - left - right - up - down - right - right.
Using codes in adventure mode
Enter adventure mode and at the "New/Load" screen hold L1 + R1 and type the enable the desired code. Note: The racer codes will not work; therefore you cannot be a hidden racer in adventure mode. Infinite masks can be used on all the races (i.e. trophy races, relic races, etc.)