Angry Birds Rio now free in the Windows Phone Store

Angry Birds Rio, normally $0.99, is now free in the Windows Phone Store.

The app places the eponymous Angry Birds in Rio, after they were kidnapped and shipped there. After their escape their mission is to save their friends Blu and Jewel.

Angry Birds Rio features:

• Seven fantastic episodes with 210 exciting levels, plus over 40 exciting bonus levels!
• Completely new achievements!
• Special Hidden fruits – discover them all!
• Put your Angry Birds skills to the ultimate test in spectacular boss fights!

The app is available at the links for Windows Phone 7.5 and Windows Phone 8.