Crash Nitro Kart Cheats

Unlock Dingodile:
By getting one Red Gem

Unlock Fake Crash:
By getting over 50 boosts on a track as Team Cortex in adventure mode.

Unlock N. Trophy:
Beat all N. Trophy ghost racers in race time trial mode.
User Cheat by SquadRadio

Unlock Polar:
By getting one Blue Gem

Unlock Pura:
By getting over 50 boosts on any track as Team Bandicoot in adventure mode.

Unlock Real Velo:
Get two Scepters.

Unlock Zam:
By getting one Purple Gem

Unlock Zem:
By getting one Green Gem

Hyper Spaceway track:
Finish in first place in all sixteen races in adventure mode. This includes the four Boss races as well as the twelve normal races. You will then be challenged by Velo to a race on the Hyper Spaceway track, which will now become unlocked in the other modes.
User Cheat by SquadRadio

FMV sequences:
Accomplish the tasks below and you will unlock the corresponding FMV sequence at the "Extras" menu.

Team Bandicoot
Challenging Krunk: By winning three trophies.
Krunk Loses: By getting one key.
Challenging Nash: By winning six trophies.
Nash Loses: Get two keys.
Challenging Norm: By winning nine trophies.
Norm Loses: Get three keys.
Challenging Geary: By winning twelve trophies.
Geary Loses: Get four keys.
Challenging Velo: Get four keys.
Losing to Velo: Get four keys.
Beat Velo without 100%: Get four keys.
Beat Velo with 100%: Get four keys, thirteen Relics, and one Scepter.

Team Cortex
Challenging Krunk: By winning three trophies.
Krunk Loses: By getting one key.
Challenging Nash: By winning six trophies.
Nash Loses: Get two keys.
Challenging Norm: By winning nine trophies.
Norm Loses: Get three keys.
Challenging Geary: By winning twelve trophies.
Geary Loses: Get four keys.
Challenging Velo: Get four keys.
Losing to Velo: Get four keys.
Beat Velo without 100 %: Get four keys.
Beat Velo with 100 %: Get four keys, have 13 relics, and one Scepter.