The game was released for the PlayStation 3 console in Japan on July 23, 2009, and in September for North America, Europe, and Australia.

[6] Half of the stages take place within the mind of the King of All Cosmos, who gets knocked in the head and suffers from amnesia.

The levels are black-and-white in appearance, and the objective is to roll up junk to bring color back to the stages, restoring the King's memory.

The other half of the stages take place in the present, where RoboKing, a robotic version of the King of All Cosmos created by the Prince and his cousins, goes on a rampage and destroys all the stars in the sky, which, unlike the King, he feels extremely remorseful for.

The objective of the new levels involves creating stars by rolling up junk as in previous Katamari Damacy games.