4 Player Joystick Adapter
Protovision extends your C64's capabilities with the 4 Player Interface - professional manufactured by individual Computers. Connected to the user port of your Commmodore 64 or 128, it provides two additional standard joystick ports for you to connect. This enables up to four players - with four real joysticks! - to play together on one computer!
You can also build it yourself. Just refer to our building instructions. If you want to adapt or even code a game to make use of the Protovision 4 Player adapter, you are welcome. Look at the source code example to see how easy it is.