In Square you have to color all blocks. You do this by swiping to the empty boxes. The game starts easily but becomes more difficult. For example, later in the game you have to fill all the squares while you can only go to new squares. You must therefore determine a route to fill all Squares in 1 go. In level 4 you get 2 squares at the same time, these also move the same. From level 6 you get teleport's, with this your square goes to the other circle.