Square is not only a relaxation arcade but also a filling blank puzzle game. It is managed for you to move the first white point to fill the whole board. I have to warn you that you are not allowed to move back to the last step which means you need to fill all the area disposably in Square!
https://www.yad.com/games/Square/index.html
Drag to play, Swipe to move
https://www.yad.com/games/Square/index.html