Nintendo started experimenting with free-to-play games featuring paid downloadable content (DLC) last year. In addition, it recently licensed its characters to developer GungHo for a 3DS-only version of Puzzles and Dragons. Nintendo will take a ten percent stake in DeNA, which runs a popular Japanese mobile gaming portal and has created notable mobile spinoffs for games like Final Fantasy. It's also responsible for popular standalone mobile games like Blood Brothers. (In exchange, DeNA will buy 1.24 percent of Nintendo.) The companies said that "all Nintendo IP will be eligible for development and exploration" in the new partnership. They'll also create an online membership service à la Steam for smartphones, tablets, PCs and Nintendo systems, including the Wii U and 3DS consoles.

On top of the partnership news, Nintendo dropped an unrelated bombshell about a new "dedicated game platform" codenamed "NX." That appears to refer to a next-gen console, but Nintendo just said "it is too early to elaborate on the details of this project, (and) we hope to share more information with you next year."