Happy Glass: Fill the Glass by Draw Lines
About this game
Happy Glass is a draw-and-solve physics puzzle. Every level shows an unhappy empty glass and a water source that is pointed nowhere near it. You draw with the mouse, whatever you draw becomes a real physical object, and the water reacts to it the moment you let go. Fill the glass past the marked line and it smiles.
How to play: hold left click and drag to draw, release to drop the line into the world. Your ink meter shows how much line you have left, and running out mid-solution means restarting the level. Lines can act as ramps, walls, lids, seesaws or plugs, and later levels add moving parts, holes in the glass you have to cap and switches you have to hit with a falling object. Restarting is one click, so experimenting is basically free.
Two things make hard levels much easier. Draw short, because a stubby angled ramp usually redirects water just as well as a long curve and leaves you ink for a second correction. And solve the last step first, meaning check the exact spot where water needs to enter the glass and build backwards from there instead of drawing from the source down. When a level has a hole in the glass, cap it before you touch anything else.
If you like drawing-based physics, WTF Games has neighbours: Cut the Rope works the same slice-and-watch loop, Single Line: Drawing Puzzle is pure line drawing, and Rope Stitch Puzzle is a close cousin. Happy Glass plays unblocked in a browser tab. It is a Unity build in portrait format, so allow a few seconds to load on a school Chromebook.
Happy Glass: Fill the Glass by Draw Lines FAQ
How do you play Happy Glass?
Hold left click and drag to draw a line, then release it. The line becomes a solid object, so use it to ramp or funnel the water into the glass until it fills past the mark.
Is Happy Glass free to play?
Yes. It runs in your browser on wtfgames.io with no download, install or sign-up, and it works on school Chromebooks.
Why does the level restart when I run out of ink?
Every level gives you a fixed amount of line. Draw short strokes and place them close to the glass so you keep ink in reserve for a correction.
Is Happy Glass hard on a school Chromebook?
It is a Unity build in portrait orientation, so the first load takes a few extra seconds. Once it starts it runs smoothly in a browser tab.
