Intel Math Coprocessor 287
Arcade Stick (Master System)
Sega Light Phaser (Master System)
NES Advantage (NES)
Zapper (NES)
Slick Stick (Atari 2600)
Multiplayer (Mega Drive)
Konami Gun (Mega Drive)
Link-cable (Game Gear)
Twin Joystick (PSX)
Memory Card (PSX)
Visual Memory Unit (Dreamcast)
Gameboy Bag