Tokyo-listed shares of Nintendo plunged 7.1 percent Monday after early reviews of its mobile game "Super Mario Run" disappointed investors.
Last week, Nintendo released the long-awaited game featuring its most iconic character for Apple's iOS devices.
The title, however, scored a rating of only 2.5 stars on Apple's app store, and players also appear to be disappointed over the game's $10 price tag to unlock all features.
Despite hitting the No. 1 spot in the U.S., it did not make the mark in Japan.
"Super Mario Run" is not yet available for Android devices. It is expected to be available for Android users in 2017.
The stock is up more than 57 percent year-to-date.