Space Plumber

The plot takes place on a planet completely covered with water, but suitable for mining uranium and thallium. Mostly the development is carried out by one corporation, but as a result of a failure in the pump control system, the mining stations are at risk of flooding. All personnel have been evacuated, so the hero walks alone through the flooded levels looking for pumps and valves.

Our task at each level is to wander around it, finding and turning some pumps and valves to prevent complete flooding (on some levels there is no water at all, on some it is waist deep). Before the start of each level, we are told how many pumps and how many valves are on this level, it is necessary to find them all in a limited time.