The Space Mushroom is a planet owned by the prince and his cousins.It is likely to be their hangout spot.It can be visited in Katamari Damacy for multiplayer.There are cousins on both sides of the planet. It is rollable in We Love Katamari and all games after it except for Me and My Katamari.
Trivia 
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- There is a meteor in space that looks like the space mushroom and it threatens to destroy Earth.
- It appears in the Jumboman tv show and forms the spiky meteor that hits the King of All Cosmos' head.
