‘Angry Birds’ Developer: We Have Not Sold To EA
techcrunch.com
techcrunch.com
Angry Birds for Android and upcoming Angry Birds Halloween (for iOS) are published by Rovio. They own the brand and develop for other platforms by themselves.
Also in case you haven't heard, the Angry Birds brand is expanding quickly. Soft toys, movie etc. All of these require contacts and expertise, which Rovio did not possess at the beginning of the journey.
The game itself wasn't as cheap as you might think. I've heard that they poured a few hundred thou into developing it.