A downloadable game for Windows, macOS, and Linux

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The King has destroyed most of the stars, but then accidentally shrunk the Prince to 1cm! Help the Prince reach back to his normal size by using the Katamari roll up things from breadcrumbs to entire islands!



Up Arrow, W: Move Forwards

Down Arrow, S: Move Backwards,

Left Arrow, A: Move Left

Right Arrow, D: More Right

Mouse: Move the camera

If you ever get stuck between the objects, press the R key to royal warp, but remember, you can only use it once every 5 seconds so don't use it as an advantage!

You can roll up anything as long as the object is half the katamari's diameter. Go up ramps when you build up speed. It becomes easier if the katamari is rounder. Get the katamari's size goal before the time runs out.

Update 1.1:

  • I added Eternal Mode for endless experience!
  • Minor bug fixes and some changes.


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Click download now to get access to the following files:

Katamari On the Unity.zip 95 MB


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Unfortunately, due to a driver crash, all the files for the game are gone forever so there will not be any more updates. Otherwise I would have to start all over from scratch and remake everything.

Thank you very much for making this game available to the world; it's a good one!  I sure enjoyed it.


I found a bug where things such as clothespins, handbags, a woman, and some buildings do not disappear as the Katamari gets too large, and even the latest version as of this writing has this bug. Could you fix it?

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Here are some of my requests for items in the game:

  • MicroSD card
  • SD card
  • Fidget spinner
  • Rubik's Cube
  • DVD
  • Laptop
  • Backpack
  • Fan
  • Bench
  • Bus stop shelter
  • Bed
  • Statue
  • Whale
  • Pond
  • Church
  • Mall
  • Airport
  • Continent after the (current) final stage

Objects like Mall (Known as shopping center) and Airport Terminal are already in the game The others, could be in the sequel If I had a team.

In the sequel, would I be able to roll up everything on planet Earth? What about the cosmos? Would you fill the gap (3-100 km) left by the official Katamari games?

I was thinking of stuff such as megamalls and airport runways