Tap on any of the lines or termination pieces to rotate them. It's easy to operate, but needs your thinking to solve these problems. There are so many levels, you can use them to kill time or train your brain. Be warned some of the puzzles are much harder than they first look. Can you solve all of them? This is an online HTML5 game presented by kacle.com, it's can be played in any Modern Browsers such as safari and chrome. You can play the game on mobile device.