Following the reveal of Dragon Quest X as a Wii and Wii-U MMO yesterday, publisher Square Enix's stock saw a ten per cent downturn as investors shifted shares.
Nikkei, one of Japan's leading media corporations, also reported that the announcement not only resulted in a drop for Square Enix, but has also contributed to a continuing slump in Sony's share price, which has reached the lowest level in Japan all year.
In a comment to the media giant, reported by Andriasang, the head of Rakuten Investment Management said that Sony's stock had been further damaged by its rival securing an exclusive on such a popular franchise, continuing a negative trend after a difficult period brought about partly by a strong Yen.
That dip was also identified as having both cause and consequence in Sony's wider electronics business, in some part attributed to recession and debt issues in Europe.
No insight was given as to why the reveal would have negative connotations for both companies, although negative perception of Nintendo's online capabilities may be a contributing factor.