Angry Birds tried to do the same. A few years ago you couldn't walk past a park or school without seeing a kid in an Angry Birds shirt or carrying one of those goody stuffed pigs. Only problem is that they milked the franchise without letting it evolve, or invest the profits in other opportunities (they tried, but how can you go from mega-hit to fresh start and hit the same lightning rod twice?). Just like that tacky wall-mounted singing fish, Angry Birds had a typical product lifetime, and Rovio should have expected their one trick pony to obey the currents of time.