One for the US only, unfortunately, but if you've been meaning to give game-streaming service OnLive a try, Deus Ex: Human Revolution could be just the kick-start you need. Buy a copy from a store (not, unfortunately, a digital download version) and you'll get a special code that also unlocks it for streaming over the wires. This means you can play it wherever you go, on any PC, Mac, or even a TV... as long as you have a hefty internet connection to get the bits to you fast enough to play it.
Update: Commenter dancingcrab mentions has been told by OnLive that this offer only works with retail copies purchased from Gamestop.
