Get a "C" or better rank in a level to unlock a bonus level.
Master code
Quickly press Left, Right, Square, Circle, X, Triangle, R1, R2, Down, Up, L1, L2 at the title screen. The sound of a jingle will confirm correct code entry.
Nightopian status
Pause the game, then hold L1 + R1 and press Triangle.
Play as Reala in Spring Valley Remake
Set the system date to April 1st to play as Reala in Spring Valley Remake.
Twin Seeds Final level
Get an "A" rank for all Dreams to unlock the Twin Seeds Final level.
Xmas Nights
Successfully complete the game with all "A" ranks with both characters to unlock Xmas Nights.
Xmas Nights Gallery, Nightopian Viewer, and Tracksuits
Successfully complete Xmas Nights with both characters to unlock the Xmas Nights Gallery, Nightopian Viewer, and Tracksuits.