If you complete the entire game, you will return to the title screen after the staff roll. You will find that the letters on the title screen have changed from red to yellow. If you push start and begin a new game, you will begin playing not as the original spaceship, but rather a large robot. This robot is in fact Bomber King from the next game that Hudson Soft would release, Bomber King, also known as Robo Warrior outside of Japan. Other than the change in appearance, there is no change to the gameplay. This is not the first time that Hudson works a sneak peak at a soon to be released game in one of their other games; HECTOR87 was actually one of the correct passwords in the game Takahashi Meijin no Bug-tte Honey.
