Kurotto is binary determination puzzle game.
It's very popular in Japan.

Fill in the cells with the following rules.
・The number in a circle indicates the sum of the number of continuous black cells extending from it, vertically and horizontally. Empty circles may have any number of black cells around them
・Cells with circles cannot be colored

What’s New

Version 1.0

This app has been updated by Apple to display the Apple Watch app icon.

Ratings and Reviews

4.7 out of 5
3 Ratings

3 Ratings

Dustin Hass ,

Beautiful game.

That’s all that is needed.

App Privacy

The developer, Yuki Fujimoto, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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