Link the digital boxes until they reach 10.
Try to solve all the digital boxes in the level until there's nothing left.
Once the level is completed, the next level will automatically open.
Click and drag nearby digital boxes to reach 10.
Upon success, the linked boxes will be removed.
Then, remove the remaining boxes.
Keep linking the digital boxes until there's no box left on the screen.
Then you can move on to the next level.
You can link any number of boxes as long as it adds up to 10.
These boxes will disappear.
You cannot link boxes in a circular manner.