I don't think they do. At least, I haven't seen a key that works with Steam after my purchase. Also, a fair bit of warning to anyone considering biting on SFxT: the character DLC discount ($5 instead of $20) is not live on the GFWL Marketplace, only Steam. There are numerous threads on Capcom...
lol. I have no car so I have to take a blue line train and then ride a bus all the way to the nearest Toys 'R Us. It's amazing how many game retail stores the heart of downtown Chicago lacks.
Got the "last" one at Chatham Ridge on 87th near Chicago. The manager was very polite and said she'd probably snag the last one for her son right after my transaction, but I can't confirm that she actually did that as I left the store. Still, I'd sooner have the game go to someone who'll play it...
Metal Gear Solid: Peace Walker Limited Edition seems to have dropped to $30 to coincide with the regular game's drop.
http://www.gamestop.com/psp/games/metal-gear-solid-peace-walker-collectors-edition/77649
The Metal Gear Solid Peace Walker Collector's Edition comes with:
Metal Gear...