
Once Upon A KATAMARI
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About This Game
Once Upon A KATAMARI is a action/casual game with both single-player and multiplayer modes, developed by RENGAME and released in 2025. With an estimated 56,000 copies sold, it is considered a modest seller on Steam. With 1.5k reviews on Steam, it stands as a game with a solid review base on Steam. Community ratings across Steam average 92.2/100 — a exceptional reception overall. According to player data, the main story takes around 7.15 hours, with side content bringing that to 11.54 hours, and a completionist run can reach 21.47 hours. The game has 5 DLCs available, expanding the base experience with additional content. Players commonly describe it as Action, 3D, Adventure, Singleplayer and Historical.
Playtime Estimates
DLCs (5)





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System Requirements
- Requires a 64-bit processor and operating system
- OS: Windows 11
- Processor: Intel Core i3-8100 /AMD Ryzen 3 3100
- Memory: 6 GB RAM
- Graphics: Nvidia GeForce GTX 550 Ti [1 GB] / AMD Radeon HD 7770 [2 GB]
- DirectX: Version 12
- Storage: 6 GB available space
- Additional Notes: Estimated performance: 1080p/60fps with graphics settings at "Low". Framerate might drop in graphics-intensive scenes.
- Requires a 64-bit processor and operating system
- OS: Windows 11
- Processor: Intel Core i3-8100 /AMD Ryzen 3 3100
- Memory: 8 GB RAM
- Graphics: Nvidia GeForce GTX 750 Ti [2 GB] / AMD Radeon HD 7850 [2 GB] / Intel Arc A310 [4 GB]
- DirectX: Version 12
- Additional Notes: Estimated performance: 1080p/60fps with graphics settings at "High". Framerate might drop in graphics-intensive scenes.











