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Once Upon A KATAMARI (also known as We Love Katamari Reroll+ Royal Reverie) is a whimsical and brilliantly eccentric action-puzzle game released on Steam in June 2023. Developed by Monkeycraft and published by Bandai Namco, this enhanced remaster celebrates the beloved 2005 sequel by wrapping its chaotic rolling gameplay in a heartwarming, fairy-tale-inspired presentation. The story follows the diminutive Prince of All Cosmos, who is tasked by his overbearing father, the King, with rolling up massive clumps of junk to fulfill the bizarre wishes of his eccentric Earth fans and restore starlight to the universe.
For PC players, the core mechanical loop remains an absolute joy of physics and pure escalation. You control a highly adhesive ball—the Katamari—pushing it through diverse environments to roll up objects smaller than itself. As you gather everything from thumbtacks and watermelons to cars, skyscrapers, and even mythical beasts, your ball rapidly expands in scale. This remaster introduces smoother controls, a brand-new Royal Reverie mode featuring five challenging flashback missions starring a young King, a dedicated Selfie Mode, and fluid, modernized split-screen local multiplayer options.
Visually, the game preserves its distinct, blocky, retro-pop art style while completely upscaling textures for modern, crisp high-definition displays. The PC port is wonderfully optimized, offering smooth keyboard and mouse setups, unlocked frame rates, and extensive display options. This delightfully surreal galactic cleanup operation requires 4 GB of available storage space on your hard drive or solid-state drive (SSD) to begin rolling.
Before downloading make sure that your PC meets minimum system requirements
Minimum System Requirements
- OS: Windows 11
- Processor: Intel Core i3-8100 /AMD Ryzen 3 3100
- Memory: 6 GB RAM
- Graphics: Nvidia GeForce GTX 550 Ti
- DirectX: Version 12
- Storage: 6 GB available space
Screenshots

How to Install Once Upon A KATAMARI?
- Download: Get the installer only from the official developer or a verified store.
- Run Setup: Double-click the official .exe file and follow the prompts.
- Default Path: Install to the recommended folder to ensure proper system permissions.
- Update: Run the game launcher to download any official security patches.
- Launch: Open the game via the official desktop shortcut.
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