Do you see the dots moving vertically or horizontally? > If you don't understand how they move vertically, press the V key or cover the left half with your hand. > If you don't understand how they move horizontally, press the H key or cover the bottom half with your hand. > You might notice a helicopter motion in either direction!
All credit to this project - except for the actual coding which was done by me - goes to https://michaelbach.de/ot/mot-sam/index.html !!
