Happy Filled Glass is a free online puzzle game where you're tasked with using your noodle to fill up a glass with liquid by sketching the best path with your pencil. The trick is to use as little ink as possible to max out your score and snag those three stars. If you're hitting a brick wall, you've got hints at your disposal to help you out. Whether you're on mobile, tablet, or desktop, this game is ready to test your wits. So, gear up and dive into the challenge now!