Crash Nitro Kart

Crash Party USA mini-game:
Repeatedly press L + R before the title screen appears. If done correctly, it will be replaced with the title screen for the mini-game. If you win all ten rounds of the mini-game, you will get three missiles at start of the Velo.

Play as Fake Crash:
In arcade or time trial mode, choose the "Out Of Time" circuit. Proceed thorough the race and stop near the bottom right of the circuit map. Stay near to the left and look for a pile of rocks surrounding a small pinkish flower. Run over this flower to end up off the main circuit. While in this brown deserted area, drive towards the starting line. From here, look around for two patches of light sand. On the big patch of sand, Fake Crash will talk to you, say that he got lost while racing, and will thank you for finding him. You will now have unlocked Fake Crash as a playable character in arcade and time trial mode.
Information in this section was contributed by Jay Mistry.

Select time trial mode and play the "Out Of Time" track. Race until you get to the U-turn at bottom right of the map. Halfway in the turn, drive to the left where there are black rocks. On one rock, you will see flowers. Drive over it and you will be in a desert. Drive to the next turn, and inside you will see two light areas of sand, one small and one big. In the big one, there is fire and Fake Crash. Drive to Fake Crash and he will say that he is lost. You have now unlocked Fake Crash.
Information in this section was contributed by unkn0wn.

Play as Geary:
Defeat Geary at the Teknee track.

Play as Krunk:
Defeat Krunk at the Terra track.

Play as N. Tropy:
Successfully complete the game with all Team Cortex characters.
Information in this section was contributed by unkn0wn.

Play as Nash:
Defeat Nash at the Barin track.

Play as Nitros Oxide:
Win all Relic races with a "Gold" or "Sapphire" rank to unlock N. Oxide.
Information in this section was contributed by unkn0wn.

Play as Norm and Big Norm:
Defeat both of them at the Fenomena track

Play as Spyro:
Successfully complete the game with all Team Bandicoot characters.
Information in this section was contributed by unkn0wn.

Play as Velo:
Successfully complete the game.

Velo track:
Defeat Velo in adventure mode.
Information in this section was contributed by pheros3.

Artillery cheat:
Win the Blue Gem Cup in adventure mode. Press L and you will get three rockets or bombs. This can be done at any time until you quit the race.
Information in this section was contributed by pheros3 and p0w3r p1ay3r.

Lunar cheat:
Win the Purple Gem Cup in adventure mode. This cheat lowers the game's gravity.
Information in this section was contributed by pheros3 and p0w3r p1ay3r.

R/C Kart cheat:
Win the Green Gem Cup in adventure mode. This cheat turns on a mini-mode.
Information in this section was contributed by pheros3 and p0w3r p1ay3r.

Turbo cheat:
Win the Red Gem Cup in adventure mode. This cheat allows you to move faster.
Information in this section was contributed by pheros3 and p0w3r p1ay3r.

3 missiles at Velo's challenge:
Win all ten rounds in the Crash Party mini-game
Information in this section was contributed by unkn0wn.

Connection bonuses:
Use a link cable to connect to Crash Nitro Kart on a Gamecube. The "Artillery", "Lunar", "R/C Kart", and "Turbo" cheats will be unlocked. N. Oxide, N. Tropy, and Spyro will also be unlocked as playable characters.

Hint: Android Alley: Shortcut:
You can ride on the green blocks that are floating on the sky.
Information in this section was contributed by the unknown legend.

Hint: Deep Sea Driving: Shortcuts:
Enable the "Turbo" and "Lunar" cheats. At the beginning, ride and jump to the right until you reach the end. Ride on it to the second jump (second black). Jump on to the track and you should be in first place, if done correctly.
Information in this section was contributed by the unknown legend.

Enable the "Turbo" and "Lunar" cheats. Ride the * ride to the sharp "S" turn (on the left of the map). Jump to the south of the map and reach to the other end of the track. You will be driving the wrong way, but ignore this.
Information in this section was contributed by the unknown legend.

Hint: Thunder Struck: Shortcut:
Drive to the first jump. Jump to ride on another platform. Continue this until you reach the track.
Information in this section was contributed by the unknown legend.

Hint: Defeating Velo:
Enable the "Artillery", "Lunar" and "RC Kart" cheats, then enter Velo's challenge. At the beginning of the race, press L and you should get three rockets or bombs. Shoot Velo, and if you are in the lead throw bombs behind you, in case he is behind you and catching up. When he is at the jump over the road that you have both already been on, sometimes he will make a mistake and must go around the corner and jump again. Note: You might be able to lap Velo if you are lucky enough. He must then pass you two times in order to get in the lead.
Information in this section was contributed by Cool21.

Hint: Use Weapons in time trial mode:
Enable the "Artillery" cheat. Press L and you will keep shooting weapons even though there are no items boxes. Note: These will only be bombs and missiles. You can attack the ghost, but sometimes the ghost will attack back.
Information in this section was contributed by Cool21.

Glitch: Spyro's tail:
Win with Spyro in an arcade race. If you see Spyro in the first, second, or third place, you will see Spyo's tail on the back.
Information in this section was contributed by Th3 L393nd 0f th3 Unkn0n3d Rac3r.

Glitch: Iron hand of Crunch:
While driving with Crunch. hold Left + Jump. The iron arm will be on the right Then, jump and hold Jump + Right. The iron arm will now be on the left arm.
Information in this section was contributed by Th3 L393nd 0f th3 Unkn0n3d Rac3r.