Big Fish Games (the place where you can get casual games as low as $6,99) is doing a nice job promoting their games.
Whenever they have new fancy games appearing that they really, really want to promote (happens very often), they also change the background image of their site. Some time okay, when they launched Mystery Case Files: Return to Ravenhearst their website had Ravenhearst images in the background. When they were promoting Azada’s special sales, again the background was (surprise, surprise) about Azada.
Yesterday they started promoting Secret Missions: Mata Hari and the Kaiser’s Submarines, and it was no big wonder that they started showing relevant background image.
Works pretty well for big portals, but also for indies who want to promote their newest product on their websites (when you have many games).