Game X-treme Stay in the Lines online

In front of you, it would seem a very simple game. Labyrinth of the mouse cursor. The goal is very simple and straightforward. Need to hold the mouse over the white part of the blue door. But not so easy, because strictly forbidden to go beyond the white part. And this, in some places not even very simple. Requires a lot of endurance, strength and patience for what would go into this game as far as possible. Good luck and enjoyable game.