Playing retro games is easy on a Raspberry Pi - and the pocket computer is pretty good at it too! All you need is a little help to connect buttons and a joystick up and you can custom design your own arcade console, desktop or stand-up machine, even just a simple controller box. It makes for a fun weekend project that will last all year. Source Adafruit: https://learn.adafruit.com/adafruit-arcade-bonnet-for-raspberry-pi?view=all