Happy Glass is the ultimate physics-based drawing puzzle game developed by Lion Studios. The aim of the game is to fill the empty cups of each level with free handedly touchscreen drawings. The reward system in Happy Glass depends on how much of the pen tool you’ll use. The total amount of ink left is displayed at the bar on top of the screen. A maximum of three stars means that you used just the right amount of ink and succeeded in filling the glass in that particular level. If you get stuck in the game by any chance, check out the video walkthrough for the 99th level with a three-star assurance:
Continue to Happy Glass Level 100 Walkthrough (3 Stars).