Here is a cool kit that lets you build your own arcade machine using a Raspberry Pi. The Picade comes with all the parts you need to get started. Just bring your Pi 2, and you are ready to play classic games. You get a 8″ LCD panel, two speaker, an Arduino compatible PCB with the Picade software, and a joystick.
The Picade kit is available for $199.99 at this time.