A free program for Android, by Zeze Game.

You have to use your finger to draw a line, which will then be shown on the screen. Your task is to use the lines to reach the bathroom. You need to be fast, because the lines will disappear if you’re not moving. There are lots of obstacles that you need to avoid. The game is very easy to play, and you will be able to finish it in no time.

In this game, there are four levels of difficulty. If you’re having trouble, you can always skip the level or try to retry it, unlimitedly, until you’re able to solve it.