The King of All Cosmos and his family clean the castle together. While doing so, they stumble upon a strange scroll. Bored after finishing, the King tosses the scroll into the air, destroying the Earth, Moon, and stars. With everything ruined, the King orders his son, the Prince, to clean up the mess. Using the scroll, the Prince time travels to specific dates to restore everything with the Katamari.
The game carries on the gameplay of previous Katamari games in which players must roll a sticky ball, known as a Katamari, over hundreds of objects, allowing it to grow in size and reach a desired size within a time limit. In Once Upon a Katamari, the King of All Cosmos has once again destroyed the earth and stars. The Prince is tasked with rolling a katamari across time to restore the sky.[1]
Development and release
In February 2025, Bandai Namco filed a trademark for Once Upon a Katamari.[2] This led to industry speculation over a new entry. The game was officially announced during a Nintendo Direct on July 31, 2025,[3] and was released on October 24, 2025.[4]
