Complete the pipe system from the top to the bottom of the screen, before the time runs out. You get points for each pipe connected to the system. Includes different types of pipes and bonuses.
Use left mouse button to rotate a piece. There are some additional pipes like the blocked pipe: Watch out for this type of obstacles! The liquid will not flow through the blocked pipe. Locked pipes can't rotate. However, fluid can pass through it. There is also a rusty pipe: You can rotate this type of pipe only 2 times, the third rotation will destroy it.