OVERVIEW: The Light Phaser is a light gun controller created by Sega for the Sega Master System. It is the Master System's equivalent to Nintendo's Zapper for the Nintendo Entertainment System.

The Light Phaser is a plastic gun consisting of a light sensor (in the tip) which is focused on a small area of the screen; and a trigger (which corresponds to Control Pad button 1). When the trigger is pulled, a compatible game flashes the screen in a way that is detectable by the light sensor, and...