Successfully complete the game. After the King speaks during the ending sequence, a short level based on the original Katamari Damacy in classic 8-bit style will begin. You can control the mini-game during the credits by using the D-pad to move and Circle to jump.

Clearing the various missions will unlock new songs in the game's Sound Test (found in the Vacation Memorial). You will also be able to select the songs for play during any mission you choose.

Eternal Mode (play without a time limit) is unlockable for all 16 normal stages. To earn a given stage's Eternal mode, score at least an 80 as your second score at the end of the stage.

To access Eternal once you've earned it, talk to the animal, make your selection, and choose the top choice when given a choice.

To exit the Eternal stage and save all items/cousins/presents collected, pause and press Square, and choose the left choice.

After completing the final "Crown" level at the Prince island, the King will speak and suddenly everything gets changed into sprites. The game title in 8-bit graphics will appear and players are treated to a short level of 2D Katamari Damacy with the game credits rolling at the same time. Press X to jump and use the D-pad to move in this mode.

By collecting 100% of the 2,434 objects in the game, your island's name board changes from wood to a strobe light name board which has many colors.

Beat 2d Daytime Mode (During Credits)

Get to the castle in Day 2d Me & My Katamari stage