Nintendo market value doubles on Pokémon Go mania

Shares in the Japanese firm have more than doubled since the launch of the popular game

Shares in Japan's Nintendo soared another 14% on Tuesday, more than doubling the firm's market capitalisation to 4.5tn yen (32bn) in just seven sessions since the mobile game Poki(C)mon Go was launched in the United States.

The phenomenal success of Poki(C)mon Go - now available in 35 countries, the majority in Europe, and most recently in Canada - has triggered massive buying in Nintendo shares, surprising even some seasoned market players.