Happy Filled Glass 4 is a tricky coloring game in which you'll have to draw lines to make the water flow into the glass until it's full.
Make the drinking cup happy and make it fill up with water. Draw lines in the level to redirect the water flow so that the water flows into the glass. The shorter the lines you draw, the more stars you get at the end of the level.
Each of the 100 levels has new tricky puzzles and obstacles in store for you. Sometimes you have to pull sponges out of the way or let the water flow cleverly over mills or trapdoors.
If you ever get stuck, you can use the "hint" button with the light bulb and get a hint where to draw your lines.
If you liked Happy Filled Glass 4, then go ahead and play Smiling Glass 2.
Grab the magic pen and fill the glass! Play Happy Filled Glass 4 online for free on KibaGames!