Once Upon A KATAMARI offers players a delightful journey through time, blending nostalgia with innovative gameplay. Set across various historical eras, players roll their katamari to collect items and restore stars to the sky. The game introduces exciting new features such as a magnet tool that draws nearby objects, enhancing the rolling experience. With a vibrant soundtrack accompanying the gameplay, it invites both new and returning players to enjoy its charming world.

The game also emphasizes customization, allowing players to choose from 68 different cousins to control, each of which can be personalized in color and design. Additionally, the competitive mode, Celestial 4-Player KatamariBall, enables players to face off against others online or practice against AI opponents. This blend of single-player adventure and multiplayer competition makes Once Upon A KATAMARI a multifaceted gaming experience.