The Angry Birds have a pretty good reason to be happy this week.

Rovio’s juggernaut game franchise is showing absolutely no signs of waning popularity, with the developer tweeting that the most recent release, Angry Birds Space, has racked up 10 million downloads in less than three days.

To put that in perspective, it took Angry Birds Rio — the last game in the franchise — a week and a half to hit that mark.

The number’s impressive, but it’s a bit harder to nail down exactly how much money was tied to it. iPhone players paid a buck each for the game and iPad users shelled out nearly $3, but anyone with an Android phone could get the game for free.