PS2
Defeating the champs for each world
Defeating Nash:
The best weapon to use to defeat Nash is the missile.Once you get the missile,try to go as near as you can to him,but be careful of his sharp spikes that he shoots,shoot the missile at him and I guarentee you will win the race.
Defeating Norm:
This is guy is fast and can be in 2.The best weapon is the booster.Take as much boosters as you can.Do not use any bombs or missiles as it might backfire on you.
Defeating Geary:
To defeat Geary,you must find the big shortcuts, there is one shortcut that you must break through glass and you need a booster.Once you find the shortcut,go through it for every lap and you are on your way to fight Velo!!
Defeating Velo:
The most important thing for defeating Velo is do not stay behind him and do not overtake him.Only at the ending of the last lap,then you boost up and overtake him to win the race
Submitted By AngryPirate_2006
PS2
How to beat Krunk
As soon as you get 3 trophies, you can race Krunk. When you are racing him, Krunk will drop spikes. If you hit one, jump as much as you can. Then successfully beat him and you will get a key and a cutscene.
If you're finding it hard to get the C on Inferno Island, at the beginning of the race, be sure to get a super boost, and the veer to the right after the first bridge, and there is a ledge which you must get on top of to get to the C. You must use a slide boost to get a small boost to help get you enough speed to ramp the dirt mound onto the ledge. After making it to the ledge just keep driving until you see the C, then time your jump just right and you'll get it.
Submitted By James dinius
GBA
Codes
There are various codes by beating the gem cups. The red gem cup gives you the turbo code. The green gem cup gives you the r/c kart code. The blue gem cup gives you the artillery code, which lets you shoot an unlimited amount of missiles and bowling bombs. The purple gem cup gives you the lunar code, which when you hit a turbo jump you go unbelievably high, (good for time trials for online world records).
GameCube
How to beat Krunk
As soon as you get 3 trophies, you can race Krunk. When you are racing him, Krunk will drop spikes. If you hit one, jump as much as you can. Then successfully beat him and you will get a key and a cutscene.
Submitted By Levi Koop
GameCube
CNK Inferno Island
If you're finding it hard to get the C on Inferno Island, at the beginning of the race, be sure to get a super boost, and the veer to the right after the first bridge, and there is a ledge which you must get on top of to get to the C. You must use a slide boost to get a small boost to help get you enough speed to ramp the dirt mound onto the ledge. After making it to the ledge just keep driving until you see the C, then time your jump just right and you'll get it.
Submitted By James Dinius
GameCube
Shortcut for Hyper Space way
When you get to the part where the ground is a tan color, go to the very left edge of the 2nd jump{ need a mask}. This will take a lot of pratice, but if u do this right, u will land on a part that bluish. Turn right and you will go off another jump, leading u back to the normal part of the track.
Submitted By Anonymous