Here's a cup that's not happy because it's empty. So how to make the cup smile? The answer is to fill it with water! Happy Glass is a fun puzzle game in which you have a special task to fill the glass with water. All levels in Happy Glass are full of challenges. Not only are there dynamic mechanics based on physics knowledge, but there are also intelligent and interesting puzzles. You can draw lines to let the water flow through, or draw other shaped objects to activate the mechanism, and no matter what pattern you draw, you have to make sure you can reach the game's goal. When one method doesn't work, try a more creative approach, there are no limits in this game, the only thing you need to pay attention to is to try to use shorter lines to complete the game. This is a test of the brain and a new challenge, so which way will you take to pass the game?