Back in December of 2010, Rovio launched a series of Angry Birds plush toys. By March of this year, they had sold just over 2 million of ‘em. Today, they’re selling another million each and every month.
The same goes for their line of T-shirts: every month, they’re selling another million.
This is absolutely huge for them, and should serve as an important stat for app developers to keep in mind moving forward. Rovio is one of the few companies that has found success on iOS then managed to evolve their intellectual property into a proper full-blown license."