heres what I was able to find , looks like its a darth vader shaped sorta controller that plugs directly into the TV set. quote: "The Plug it in & Play TV Games products are gaming systems that contain multiple games in one single controller and plug directly into the A/V jacks of any standard television. The Star Wars TV Games unit contains five original games based on Revenge of the Sith including “Coruscant Attack,” “Grievous Onslaught,” “Droid Invasion,” “Gunship Battle” and “Utapau Chase.” Players can pretend to be brave Jedi as Obi-Wan Kenobi piloting a Jedi starfighter in intense space combat, feel the Force as Anakin Skywalker fights enemy droids in lightsaber battles, take command of a Republic gunship in the Clone Wars and much more. For more information on these games and controllers, read this article here.
“GameKeys are expansion packs that when inserted into the controller; unlock new Star Wars games – allowing fans to play as even more of their favorite characters in all new games,” JAKKS Pacific Director of Marketing Anson Sowby explains.
The GameKey Expansion Pack offers players the chance to add extra Star Wars games – the first set being “Turret Defense” and “Yoda’s Escape” – which are made exclusively for the Star Wars game controllers."
full article here: http://www.starwars.com/gaming/videogames/news/news20050304.html
hope that helped!