Packages:
http://flickr.com/photos/tom61/226403947/Size comparison:
http://flickr.com/photos/tom61/226403949/Wow. I was

when I saw these. The combined size of the paddle or joystick and the 'cheater box' as I like to call it is less than that of an Atari joystick.
I'm not sure whether these are redone versions of the games, an emulator running on an SoC, or an AOAC (
Atari
on
a chip) like that in the Flash Back 2. To change switches (like difficulty, color/BW, etc.) you hit the button on the back of the paddle (I've only played with the Pong paddle so far) and move around the paddle to select switches and press fire to toggle it, or to exit that game.
I took apart the 'cheater box' and paddle, however, I didn't find anything other than a glop-top, wires, and some capacitors, and most of that was in the paddle itself. The 'cheater box' is just an overly complicated video cable and a battery box.
I'll probably record a short video of the interface, games, and menus to put up on Google Video later.
You know it's only a matter of time before they release some of the arcade joysticks this small.