Changes

This accessory was very common. It's a light gun, used for many games such as ''Duck Hunt'', ''Wild Gunman'', and ''Hogan's Alley'', to name three examples. When the trigger is pulled, the screen flashes black for a period of 1-2 frames while displaying a white rectangle (indicating the target to shoot at). If the gun detects it is pointing at the white rectangle, it tells the game to register a hit. On real hardware, this could be quite unreliable unless the lenses were thoroughly clean. The Zapper plugged into the P2 port and mainly worked with old CRT TVs; newer LCD TVs will not register with the Zapper. Many emulators support this accessory with 100% accurate hit detection in the form of a mouse click (PC), tap (for mobile), remote ([[Wii emulators|Wii]] ports of NES emulators), or faked pointers using a controller.