you should clean the whole reactor zone. Select planet to let the game begin. A turntable is divided into 8 sectors with colored plutonium block is fired from the core. You should match the colored plutonium block to one reactor zone. Press the left mouse button to rotate the reactor into right position. If you join at least 3 plutonium blocks of the same color, you will destroy them. You must clean the whole reactor zone. Don?t let any sector get filled, because you will loose one life. If you succeed to clean the whole reactor zone, you will move into the next level. Your scores are recorded on the left down corner of the map. Time is limited.