Simply draw a lie to light up all the circles usig oe cotiuous stroke. If you get stuck, use a hit or restart the level to try agai.

Single Stroke: Energy Line Puzzle is a fun and simple way to train your brain every day. This mind-challenging game has easy rules—just connect all the circles using a single continuous line. It’s a great way to keep your brain sharp with quick, clever puzzles. Spend just a few minutes daily to give your mind a boost. Enjoy this brain-training experience anytime, anywhere!

For iOS:
Safari on iOS 8 and later supports WebGL 1.0, and on iOS 15 and later supports WebGL 2.0.

For Android：
Nearly all of them support WebGL