Nintendo is a company that make Video Games.It started in Japan in 1889. It is known for making such popular franchises as Donkey Kong, Mario, and Zelda. It has made some popular game devices such as Wii,DS and Gamecube. The current president is Satoru Iwata.
It is a fictional disese from the "Official Nintendo Magazine" that means you start liking Nintendo immensely or become addicted to it.