In Toy Plumber, children use the right mouse button to rotate sections of the pipeline. Each level features 2-3 different types of pipes, and the goal is to rotate these pipes so they connect seamlessly, creating a complete path. By successfully connecting the pipes, the child helps the bear character find its water, completing the puzzle and advancing to the next challenge. The game encourages logical thinking and problem-solving while offering a fun and rewarding experience as the bear reaches its drinks.