The donut has escaped! Get it back in the box where it belongs. In this 2D physics puzzle game there are no single solutions. You can unleash your creativity and build a contraption the world has never seen. Or keep it simple. Your choice.

- Input system specially developed for mobile
- Create your own unique solutions
- Save and load your constructions
- Save and share replays with your friends
- 7 different building elements: wood bars, steel bars, chains, anvils, wheels, clockwise wheels and counter clockwise wheels
- 5 different worlds. Each containing 10 levels
- Collectible to unlock the secret world
- Game Center leaderboard for each level. Compare your score to the rest of the world
- Sketchbook for inspiration and ideas

Your opinion is important to us. If you have any suggestions for how we can improve the game, or experience any problems, feel free to email us or drop a comment in the review section.

Happy Building!

What’s New

Version 1.3.0

- Added In-App Purchase to unlock full version. (Players that already downloaded the game will of course have this for free)
- Some UI improvements.
- Minor updates and improvements.

Ratings and Reviews

4.7 out of 5
3 Ratings

3 Ratings

App Privacy

The developer, Simon Hoglund, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Purchases
  • Location
  • Identifiers
  • Usage Data
  • Diagnostics
  • Other Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • 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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