There are many gaps on the site, the player's task is to create the perfect appropriate box, can plug the gap. With the level of progress, the challenge behind the difficulty will increase oh, as far as possible to create the perfect gap, can get a higher score!
Mouse operation, mouse length press, manufacturing box.
Make the perfect square, complete the task.
When the game is loaded, click the play button twice-then click the OK button to start the game