We knew Angry Birds was popular—so we didn't expect it to take quite so long for the game to reach 50 million downloads. Thirty-five days? That's how long it took? Come on! We expected it to do 50 million in a week. For shame, Rovio!

So what if that apparently makes Angry Birds Space the fastest-growing mobile app and shatters all the company's previous records? We expected more.

“We extend our deepest gratitude to all fans of Angry Birds everywhere,” Rovio writes. “While numbers like this certainly say something about the popularity of Angry Birds, for us the main goal is to keep creating fun new experiences that everybody can enjoy!"

To celebrate, they've released ten new levels for free, so go open the app (we know you have it) to check those out, and let us know what you think of the craze in the comments or on Twitter.