A couple of bronies over in Seattle decided ponies needed an arcade machine, and thus began Project PonyCade. Built from the ground up with pony in mind, the system features an elements of harmony button configuration, as well as all sorts of neat giant vectors of the mane cast, Derpy, and a few others.
Check out their progress gallery in three parts below:
Part 1
Part 2
Part 3
And the video of it completed and in action after the break!
Any questions or comments should be sent here: melodiousgames@gmail.com