This USB controller is officially licensed by Sega, and not only is it compatible with the Sega Genesis Mini, it also works on PC, Mac, and whatever Raspberry Pi emulation machine you've cobbled ...

Sony to Release Special Edition ‘Astro Bot’ Wireless Controller: Both the game and controller launch on September 6.

This budget-minded Ultimate 2C controller is expected to ship in July for $29.99 with an extra set of remappable shoulder buttons, plus support for Android and PC.