In the fun game Happy Glass Thirsty Fish, you can draw a line in the sand to fill the glass with water. Your goal in this game is to help the fish quench its thirst by filling the glass with water. The withering of the fish makes it feel miserable. The task given to you is to draw a line to fill the glass with water and put a smile on the fish's face.
If you are playing the Happy Glass Thirsty Fish game on desktop, you will need to use both the keyboard and mouse to operate the game. Also, if you are using a mobile phone or tablet, you can simply use your fingers.