The Angry Birds franchise has hurtled past a billion downloads. The number covers free and paid downloads of Angry Birds, Angry Birds Seasons, Angry Birds Rio and Angry Birds Space. The news comes a couple days after Rovio revealed revenues of $106.3 million in 2011, with approximately $67.6 million in pre-tax profit.

There's one curiosity in today's video announcing the milestone: the closing moments highlight physics-based Rube Goldberg puzzler Casey's Contraptions. As Gamasutra notes, Rovio has not officially purchased Snappy Touch or Mystery Coconut, the developers of the game. The connection between Rovio and the Casey's Contraptions team is currently unclear.