A retailer exclusivity agreement has been announced for a promotional game, potentially limiting its ability to reach users and promote the movie, but also increasing the promotion for the retailer. Amazon announced that it will be the exclusive carrier of the Android version of Angry Birds Rio, meaning that the movie tie-in title will not be available on the Android Market at launch, but will instead be downloadable through the Amazon Appstore.

What? "Amazon Appstore?" The retailer is launching its own digital marketplace for Android "very soon," and you would do well to familiarize yourself with it, because it'll also be home to "exclusive" debuts for ad-free Angry Birds and Angry Birds Seasons.