How does duck hunt work? The game was revolutionary for it's time. The zapper didn't actually shoot anything, it senses light from your television. But how does it know where you're aiming. When you pull the trigger, the entire screen turns black for a fraction of a second. Except for white boxes wherever the ducks are. The Zapper can tell if you are aiming at one of those boxes and registers a hit. This game forever changed the way we play video games and is one of the all time classic titles on the NES. Learn more about DKOldies on our about us page, check out our YouTube channel or read our Google reviews.