When the "Start" and "Configure" options appear at the title screen, press the following before the Alien 3 logo fades out:
Effect Code Stage Select Up, Down, 2, Left, Right, 2, Up, Down, 2
Contributed By: shadowcore76.
Get a high score and enter your name as CHEAT to get extra ammo.
Contributed By: samjustsogoodatddr.
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