"Nuts & Bolts: Screw Glass" is a creative puzzle game. In this meticulously designed mechanical world, you need to match different screws to their corresponding colored boxes. Every move requires careful consideration, as unmatched screws will fall into the groove at the bottom — once the groove is filled, the game is over. puzzle game, nuts and bolts, screw glass, color logic, 2D puzzle, kids puzzle, no blood, challenging, brain-boosting, spatial reasoning, color matching, online puzzle, free puzzle, desktop game