Nintendo has been rolling in the Wii dough for awhile now, but it looks like their cash printing machine may be slowing. According to an earnings report filed today, the Big N posted a 66 percent drop in quarterly operating profit due to “slowing demand for its Wii console and a stronger yen.”

What’s surprising is how fast demand has fallen. Nintendo maintained that it would sell 26 million Wii consoles before the year was out alongside 30 million DS handhelds, so we will see what happens. DS sales have also slowed due to “increased competition in the handheld business from Apple’s iPhone.”

This story has been three years in the making. Video game retailer GameStop finally has enough Nintendo Wii consoles for everyone, and it only took about three years for it to happen. In an interview with Gamasutra, GameStop’s senior VP of merchandising Bob McKenzie says that the company’s supply of Nintendo Wii consoles has finally caught up with demand.

“You know, three years later, we finally have enough inventory on the shelf, and we’ve got a couple of weeks in supply of this. That’s good because we can finally determine and gauge it before we get into the fourth holiday season.”