I've been contemplating this for a while using emulators for running classic arcade games (MAME) . I already have it all set up on my laptop but the xbox type controllers aren't great. You can buy flat packed cabinets straight off ebay/amazon or make your own. I currently have an older mini PC with an i5 processor, so it's faster than the PI 3. All I'd need is a case/build own case and the joystick and buttons, which are readily available. We have a couple of old 17" 4:3 monitors which are ideal. Buy flatpacked, or make own case ? Hmm. Anyone done one ?