An arcade light gun is a type of video game controller designed for shooting games in arcade settings. It uses a light sensor to detect the player's aim at the screen, allowing for interactive gameplay. Players typically point the gun at a monitor displaying targets, and when they pull the trigger, the game registers the shot based on the gun's alignment with the targets. These light guns became popular in the late 20th century, with iconic games like Duck Hunt and Time Crisis. They offer a unique gaming experience by combining physical movement with on-screen action, enhancing player engagement and excitement.