@Luxous You will need to consider the controller interface at some point. You mentioned joysticks for each station. I take that to mean arcade style controls. If true, you probably also need arcade pushbuttons. Depending on your needs, joysticks and pushbuttons can be easily purchased from a variety of places. But what do you connect them to? I might suggest looking at Adafruit's RetroGame software that allows you to use GPIO pins for input. The software converts the inputs to keyboard keypresses. The beauty of this solution is that with just a single joystick per Pi (following my assumptions above), you don't need additional controller hardware, and you could simply wire everything directly to the Pi x6.