The new Arduino Esplora has been designed to emulate traditional input devices like a mouse or keyboard, and Arduino has developed to not only be a games controller.

New Arduino Esplora Provides A Ready-For-Gaming, Customizable, Open Source Video Game Controller Darrell Etherington 5:59 AM PST · December 10, 2012 ...

Posted in Arduino Hacks Tagged arduino, Esplora ← Rolling Your Own Furnace Controller Retrotechtacular: A 1983 Walking Robot Called ODEX-1 → ...

[Tobie Nortje] sure remembers them and has built an Arduino controller to play virtual versions of the games. He started off by finding a website that is digitizing the old games.

Electronics maker Adafruit Industries has developed its own Arduino-compatible boards, including one called the Flora--and a few craft projects to go with them.