Boss Endurance and Cake
By completing the game you can unlock Boss Endurance mode for Minigame and a Cake for your collection Unlockable --> How to Unlock
Boss Endurance --> Complete the game once
Cake for collection --> Complete the game once
To unlock extra mode you must collect all 120 chests throughout the game
Unlockable--> How to Unlock
Extra Mode --> Obtain all 120 chests in adventure mode
To gain access to the tower in the center of the World Map, collect the secret map pieces from each of the other worlds. In the tower, you can get any ability bubble, including the Triple Star Rod.
Kirby Squeak Squad Easter Eggs
Hidden Birthday Message
On your birthday, play the game. After the startup sequence, there will be a brief 'Happy Birthday!' message decorated with various Kirby characters.