iPhone Screenshots


Connect the bubbles using the shortest possible line.

"Graphics are simplistic and outstanding; we don't need anything else." (8.5 / 10)
- Anna Grace, Appszoom

"...unlike many in this category actually requires thought and strategizing."
- AppPicker

Have you ever thought about one of the world’s hardest computational problems? Here it is: take your time and savor it. The computer has to try billions of alternatives before it’s able to find the shortest path. But you can do it better: the human brain is much more sophisticated. Have fun!


• Based on one of the world's hardest computational problems.
• Over 100 challenging levels.
• A gorgeous underwater world.
• A pleasure, but not a cinch.
• A completely calm, relaxed atmosphere.

What’s New

Version 1.1

• Bug fixes
• Design changes

Ratings and Reviews

3.9 out of 5
8 Ratings

8 Ratings

Kvnhltnkv ,

Quick Route

Keeps freezing

Pildbe26 ,


I'm a big fan of this developer's other educational apps, Pythagorean, Euclidia, et al. But this one seems like an early effort they abandoned too soon. It claims to be based on computational problems, but those concepts are absent from the game itself in that you don't really know what you're supposed to be learning or what skills you're using. The try, fail, succeed mechanics of the game aren't much different than any other puzzle game one wastes time on. In other words, yes, you have to think, but don't expect to learn anything worthwhile.

***_KaT_*** ,

Great game!!!

I love the game! You should try to play. It is really fun.

App Privacy

The developer, HORIS INTERNATIONAL LIMITED, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

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


  • Family Sharing

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

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