You know what isn't making the kind of money that it used to? Angry Birds. As hard as it might be to believe, the Mario of mobile gaming isn't quite pulling in the number that it once did. According to released by the company this morning, Rovio's net earnings fell by EUR28.6 million; a more than 50% drop from 2012.

Before you sound the panic alarms, it's important to stress that despite poor earnings, the company's overall revenue actually went up a few million euros - from EUR152.2 million to EUR156 million. So while earnings might be down, Rovio's financial security is not.