Platform(s) other than mobile?

Is there a plan for ad services outside of mobile?

I would like to include ads within the game itself rather than removing the player from the game to see an ad. i.e. Seeing a billboard in game with a real ad, or in a game like left4dead with an ad placed next to the ammo depot that says "Ammo provided by blah blah blah." with an image/video to load.

I know this would limit the ads to impressions only, and reject clicks and conversions. I am looking for ads with immersion for pc, consoles, and web.