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Light Gun (Video Shooting Series)
NES Zapper / Kosen ju shirizugan
Optical sensor allows wielder to aim, whilst depressing the trigger blackens the entire screen and world for one frame, whilst valid targets are rendered in white. The light gun detects the change in illumination, determining if targets are within a valid hit zone. On poorly designed original games, a glitch enabled players to automatically register a hit on the first target every time, simply by aiming the Light Gun at any nearby available bright light source. This glitch was later quickly rectified through a sequential target verification and detection check (the initial black screen frame beforehand, to check that no targets match, ie the gun has not been aimed at a lightbulb).
