Happy Glass for android - is a kind of physical arcade in minimalistic design. Each stage of this puzzle is a real challenge to your logic, because, it would seem, the usual action here turns into a whole series of incidents.
At the level there is a glass, a tube on which the liquid will flow, and certain obstacles in the form of geometric figures. To complete the location, you need to fill the glass with liquid as quickly as possible. You need to create a situation where water flows directly into the vessel. For example, if you see that there is an abyss between two cubes, you need to understand that the water will flow into it. So, you just need to draw a connecting line with your finger, which will become a bridge or a channel for the liquid.