How do I control the game?

Draw lines by holding the left mouse button and dragging to create the path for the liquid.

Is Happy Glass free to play?

Yes, the game is completely free and runs directly in your web browser.

What devices can I use?

It works on any device with a modern browser, including desktops, laptops, tablets, and smartphones.

What is the main objective?

Fill the glass completely to make the crow happy in each level.

Any tips for solving the puzzles?

Try drawing lines that loop or bounce off walls to reach hard‑to‑fill corners.

Home puzzlesHappy Glass : Fill the Glass by Draw Lines

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Happy Glass : Fill the Glass by Draw Lines

3.7/ 52.1K plays

About this game

Happy Glass: Fill the Glass by Draw Lines is a simple puzzle where you use your mouse to draw lines that guide liquid into a glass. Each level presents a new layout, and your goal is to find a path that fills the container and makes the crow on the screen smile. The only control needed is a left‑click drag to create the lines that direct the flow.

The fun comes from experimenting with different routes and discovering unconventional solutions that still work. The game runs in any modern browser, requires no download, and is completely free. Built with HTML5, it plays smoothly on desktop computers, laptops, and mobile devices, letting you enjoy quick brain‑teasers wherever you are.

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How to play

Draw Lines with Mouse Left Click

Frequently asked questions

How do I control the game?: Draw lines by holding the left mouse button and dragging to create the path for the liquid.
Is Happy Glass free to play?: Yes, the game is completely free and runs directly in your web browser.
What devices can I use?: It works on any device with a modern browser, including desktops, laptops, tablets, and smartphones.
What is the main objective?: Fill the glass completely to make the crow happy in each level.
Any tips for solving the puzzles?: Try drawing lines that loop or bounce off walls to reach hard‑to‑fill corners.