The company has hired Marvel's Iron Man producer David Maisel to helm the film and confirmed that there have now been 400m downloads of the game.
The cost per download is of course tiny, but it's not actually free so this 400m actually means something in financial terms. The business is targeting China as its next major territory as most of the players are in the US at the moment.
Finances aside, the other thing the game has done - or at least of which it's been a major part - is changing the games market altogether. Initially people had computers and they had games consoles - once the console market was established the two were pretty much divided down the middle.
There were of course games on phones for at least a decade before Rovio emerged, and there were PC games. It was the sales of games like Angry Birds, however, which really grew the so-called "social gaming" market. Numerous reports have suggested that the iPhone is now the biggest mobile gaming platform, and the record sales of iPhone 4S will have done nothing to change that.