The Japanese computer game creator said entire year working benefit would be about a third lower than anticipated at 30bn yen ($288m; Â£236m).
Deals fell 33% to 136.8bn yen ($1.3bn) for the six months to September.
In any case, net benefit more than trebled after Nintendo sold a controlling stake in a US baseball group.
The organization had claimed the Seattle Sailors since the mid 1990s.
The worldwide accomplishment of the Pokemon Go application discharged not long ago has not helped Nintendo’s main concern as it was produced and disseminated by US-based Niantic, a spinoff of Google.
Nintendo possesses a stake in Niantic and a 33% share of the Pokemon Organization, which gets permitting expenses for the brand.
A week ago, Nintendo said its next diversions gadget would be a handheld, versatile gadget that bends over as a home support.
The Nintendo Switch, which resembles a tablet PC with controllers joined to its sides, is relied upon to go at a bargain in Spring.
Surveys have been blended, with some depicting the new gadget as frustrating.
The Switch could be Nintendo’s “last shot” at offering a home comfort, said Paul Jackson, of the Ovum consultancy.
“The Wii U was a fender bender, essentially. They fudged the correspondence and mistook everyone for the controller and what the screen was for. Thus it sold about a tenth of what the first Wii sold.”
The Wii U was vigorously beat by Sony’s PS4 and Microsoft’s Xbox One, despite the fact that Nintendo has appreciated accomplishment with its handheld 3DS gadget.
Nintendo reported a 5.95bn yen working misfortune for the half year, a sharp inversion from a 9bn yen working benefit for a similar period in 2015.
Japanese exporters have been hit hard by a fortifying yen as of late, which has cut their benefits.
Partakes in Nintendo have fallen 8% in the previous month, however are up 46% since the begin of the year.