Happy Glass is a very interesting puzzle game. You must draw a line to guide the droplet into the glass. It is worth noting that the shorter the drawing time, the more stars you can get. You need to use your imagination and creativity to complete each level. The first half of the level is relatively simple, but in the second half of the level. Are you ready for many obstacles? At the same time, you need to overcome the difficulties caused by gravity, because the water will flow out of the glass under the action of gravity.