It seems kind of hard to believe, but back in December 2009, Rovio released the first Angry Birds game. Ten years later, Angry Birds games have been downloaded over four billion times. The series has spawned countless offshoot products, including two movies that have grossed nearly $500 million so far (and counting). The latest product partnership is with the footwear company K-Swiss.
Source: N4G PC Rovio is partnering with K-Swiss for Angry Birds 10th anniversary sneakers