The success has led to billions of dollars in stock gains for Nintendo, which saw its share value double before creeping back down, which has even gotten stock "shorters" to start playing with it. And companies are starting to see their value boosted by association: the game launched in Japan today with a heavy McDonald's promotion partnership, and the burger giant saw a subsequent 20 percent leap in its stock value. Despite criticism that Nintendo just cashed in on a franchise name without bringing over real gameplay, the game continues its onslaught as a mobile juggernaut.