Prehistoric Isle in 1930

Ships are disappearing in the Bermuda Triangle. Two planes are sent to an unexplored island, the so named "Greenhell Isle", to investigate the disappearances. They discover a land forgotten by time, filled with hundreds of hostile dinosaurs. The player's plane in Prehistoric Isle only has a single, straight ahead shot. By picking up a power-up icon from floating dinosaur eggs, however, the ship gains an option. The option rotates around the ship when the secondary button is pressed, and unleashe...