You will enjoy Happy Glass game because it has simple graphics, sweet sounds and easy gameplay. The game has many different levels with more difficult questions in higher levels. Your goal is to draw as few lines as possible so that the cup can be filled with water and smile. You need to use your wits and physics to draw logical and effective lines. You can also customize the shape and color of the cup to create variety and richness. You can move your finger or mouse to draw, press the delete button to erase the line, and press the play button again to replay the level.
You should draw lines of the right shape and length for the goal of each level. You can draw different lines to create different effects, like push, pull, rotate, or bounce.
You should take advantage of the objects available in the game screen to figure out how to lead water into the cup. You can also draw on objects to make them move, rotate, or fall, creating new firing lines.