It is a game that surrounds many circle with one-stroke.

Make one-stroke that the lines do not cross, through all the relay points on the panel.

It is necessary to enclose all ○ (island) mark and exclude all × (shark) mark.

If succeed in writing with one-stroke, finished and proceed to the next stage.

The level goes up depending on the speed of clearing.

As the level goes up, the number of circle and X marks increases and the stage becomes complicated.

Clear all 10 stages, the total score will be registered on the leaderboard of the game center.