All Working Kirby's Tilt 'n Tumble Cheats - GameBoy Color

Replay levels
Defeat King Dedede to replay any desired level.

Hard mode
Collect all the Red Stars to unlock Hard Mode.

Invincibility
Set up a red bumper exactly vertical or horizontal with the bumper. Repeatedly roll into the bumper to become temporarily invincible.

Use the blue glove power-up to get pushed in the air three times consecutively to become temporarily invincible.

Enter a jumper, then jump out of it and into another jumper. Immediately jump out again into another jumper. Jump out once more time to become temporarily invincible.

Level 4-3: Unlimited lives
When you start level 4-3, you will see four Waddle-Dees walking around in a circle. Flipped, they will turn into blue stars. Collect all four of them to earn a life. Repeat this as many times as needed.

Spying Kirby
Pause game play and slowly tilt the Game Boy Color in any direction. A second Kirby will spy on the first one while he is sleeping . Pop the Game Boy Color up to wake Kirby.