Happy Glass is a fun and relaxing 2D physics-based puzzle browser game with a hand-drawn doodle style. Your task is simple but surprisingly creative: draw lines or shapes with your mouse to guide water from a faucet into an empty glass and fill it up completely. The game is built on realistic physics, making every line you draw matter. With intuitive controls, gradually increasing difficulty, and over 100 carefully designed levels, Happy Glass challenges your logic, timing, and creativity. Its clean visuals and easy-to-learn gameplay make it perfect for quick play sessions, while deeper puzzles keep you engaged as the challenges grow.

In Happy Glass, your main objective is to fill the glass with water by drawing smart lines or shapes in a single stroke. You may need to create channels for the water, block moving obstacles, or even support and protect the glass itself. Each level is completed once the glass is successfully filled. Because the game relies on physics simulation, success depends on how well you understand gravity, balance, and the structure of your drawings.

In Happy Glass, you solve puzzles using only one tool: your drawing line.

• Guide the water: If water cannot reach the glass directly, draw lines or shapes to create a path that directs the water into the glass.
• lock obstacles: Some levels include orange objects that fall due to gravity and may block the water. Draw shapes to change their movement or stop them from interfering with the water flow.
• Protect the glass: If the glass is unstable, floating, or unbalanced, it may tip over when the level starts. Draw supports or platforms to keep the glass steady so it can safely collect water.

Important: Your ink is limited. The less ink you use, the higher your final score will be.

Game Controls

Mouse: Click and drag to draw lines or shapes

I’m stuck on a level. What should I do?

If a level feels too challenging, you can use the in-game Hint feature. Click the “Hint” button in the top-right corner of the screen and watch a short ad to receive guidance. The game will show a dotted example line to suggest one possible way to solve the puzzle.

How can I earn three stars in a level?

• Fill the glass correctly: First, make sure the glass is fully filled with water. Be careful—if any orange objects or drawn shapes fall into the water, the level will not count as completed, even if the water reaches the top.
• Use as little ink as possible: To earn the highest score, keep your drawings minimal.

Using more than 25% of the ink limit results in two stars

Using more than 50% results in one star

Finding the simplest and most efficient solution is the key to earning three stars.