Amazon opens an Android Appstore and it is giving away the game, Angry Birds Rio. So, if you are on Android and in US, grab this chance.
For International users, we will need to wait. I copy Engadget’s description as I have not test it before.
The switch has just been flipped and early adopters will be welcomed with a free copy of Angry Birds Rio, whose Android launch Amazon scooped all to itself. Beyond day one, Rio will be a $0.99 app, but others will take its place as the online retailer is aiming to serve one usually-paid app for free each day. A total of around 3,800 applications are available at launch and you’ll be able to get on board via either a dedicated Appstore app on Android (sideload link available below) or Amazon’s web interface.