Once Upon a Katamari is an action-puzzle game developed by RENGAME and published by Bandai Namco Entertainment. The game is the first original console installment in the Katamari series since Touch My Katamari (2011); it was released on October 24, 2025, for Nintendo Switch, PlayStation 5, Windows, and Xbox Series X/S, with a Nintendo Switch 2 version set to follow on October 8, 2026.