Pyramid War - Atari - Strategy, Adventure

There are a lot of valuable treasures kept in the area of Pyramid. The pirates would like to excavate them secretly with their helicopters and jets. The Keeping Culture Association cannot but command tanks and propellers to prevent the pirates from getting to their destination. You start this game with three propellers; one is active, and the others are reinforcements. Shoot down the enemy's helicopter and jet, you get scores.