This is a simple puzzle game that only connects lines and puts out them.

You place a box with lines on the square .
Lines disappear when they connect.
A box disappears when there is no lines on it.
You'll be happy when a box disappears.

This is suitable to kill time because there is no time limit.
You can play at your own pace by taking a break or continuing on the way.

If your skill goes up, you should challenge in game mode "Hard".