Free physics games online are here! This puzzle follows a tale of two brothers working on a duck plant. After an accident William falls, and Sam has to descend to the deepest levels to find him. Solve 27 physics-based puzzles free online to help the brothers to safely return to the surface. The factory is full of cogs and wheels, and moving platforms. Use arrow keys to move and press SPACE to switch between the characters. Survival is teamwork, thus synс siblings’ actions to push counterweights and fill the gaps. Bubble costumes are designed to protect them from acid, yet pay attention to the Warning signs.