Zwirn is a challenging puzzle game. The first four tutorial levels show you how to play, and the remaining 21 levels will help you to become a 'Zwirn' expert! How do you play? It's very simple! All you have to do is guide the twine with your finger, touching the dots scattered across the screen, and then connect the end of the twine to an exit. There are a number of pins available that you can place anywhere on the screen to give your 'Zwirn' the shape required.