His hometown is being taken over by an evil music-hating organization called the Cacophony, led by failed opera singer Dame Isolde Minor.

The game is played with the DS turned sideways, similarly to Rhythm Heaven on the same platform, with the action taking place on one screen, while the player must use the stylus on the other.

Depending on the player's progress, you can build a set of stairs at the end of every day to help get Groovy Whale get closer to his home planet.

Some people called it "bland" and "pointless," and others criticized it for being short or for being "a ripoff of" Rhythm Heaven, whereas others praised it for having a unique plot and characters.

One critic said that "(its) delightful presentation and super catchy chiptune soundtrack will get your toes tapping and your head banging in no time.