Arrow Keys or MOUSE. (Joystick i the settig sectio.)

Are you ready to try the hardest game ever? Work your way through 60 incredibly hard levels! High attention and concentration will make playing games easier. You are red square, avoid the blue circles and collect yellow circles. Once you have collected all the yellow circles go to green area to complete the level.

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