Kirby Super Star Ultra Unlockable: Sound Test
To unlock an in-game sound test, complete any six minigames.

Kirby Super Star Ultra Unlockable: Blooper Reel Video
To unlock a "blooper reel" video, complete The True Arena once through.

Kirby Super Star Ultra Unlockable: Original Footage Movie
To unlock a movie of footage from the original Kirby Superstar, complete the Helper to Hero quest as each of the selectable helpers.

Kirby Super Star Ultra Hint: Reset Game
You can reset the game by hitting R, L, Start, and Select at the same time.

Kirby Super Star Ultra Easter Egg: Mario Characters
During the battle with King Dedede, walk to the sides of the arena. On the right side, youll see some Toads, Wario and Luigi watching the battle. On the left, youll see Mario, Toadstool and some more Toads. Nice!

Kirby Super Star Ultra Easter Egg: Stone Attack Characters
If you continuously use Kirbys stone ability, youll find yourself changing into statues of well-known Nintendo characters in addition to Kirby himself, such as Samus, Mario, and other characters from the Kirby universe.

Kirby Super Star Ultra Hint: Secret HAL Room
In Stage 2, go to the area with the stone switch and hit it to break the blocks. Head left, and press UP to find a door. Go through it, and defeat the mini-Boss. Continue to the right, and you will eventually reach a room with blocks spelling "HAL" and an Invincible Candy.