I-Ninja cheats for the GameCube

xPower-Ups

Whenever you kill an enemy in a rapid succession, the number to the right of the health bar increases by one up to 10. This represents what points you receive for killing an enemy, multiplied by the number displayed. This is useful in certain missions where a high score is required to earn the grade.

rating: 84%

This is the highest rated I-Ninja cheat for the GameCube on the site

Mow grass

Where there are grass, flowers, mushrooms, other foliage, objects other than crates and barrels, and certain decorative objects, you can cut them down to earn a few extra points towards your main score. This is useful in the certain levels that require a high score to earn the grade.

rating: 82%

Defeating Malakai

In the first part (where there is lava for a field), keep a steady pace while jumping around on the stones. Hold Forward and the direction that you want to jump and collect the shuriken. Throw it at him without locking on. After throwing the full amount of eight shuriken three or four times, he will fall down into the lava. Then, he will jump up and absorb the lava. You will now have to sword fight him. The Soul Sword and Revive Rage are recommended for this. If you run at him and slash repeatedly, you are going to get hammered. The best times to attack him are when he just finishes a quick slash and when he is just about to do the non-shock wave ground pound. Hit him at those times and use Berserks and Insane Rages every time you do not need to revive.

rating: 79%

Battle Arena

Get all the grades, then you should get the "Master" grade. The Battle Arena will now be open in Robot Beach.

rating: 77%

Healing

If you are low on health, try to find some weeds and chop them down. Notice that your Rage Ability switch will gradually increase. Keep chopping down weeds and you will soon be able to use your "Ninja Revive" to heal yourself. If you are low on health, use the Ninja Fury. You will recover some health.

rating: 75%

Level skip

Pause the game, then hold R and press B(3), X. Release R, then hold L and press Y(2). Release L, then hold and press R, B(2).

rating: 69%