Sea Dragon 1982 ported to C64 1984

Sea Dragon is a 1982 2D side scrolling shooter. It was ported to the Commodore 64 in 1984. You pilot a submarine through underwater caves attempting to destroy a reactor. Mines, gun turrets, and a variety of enemies try to stop you. The submarine is armed with missiles and torpedoes. Your air supply is limited, so when possible you must surface to replenish it.