Some analysts say that Nintendo's days are numbered. Holiday sales of its new console, the Wii U, have been lackluster compared to Microsoft's Xbox One and Sony's PlayStation 4.
But since Nintendo still offers some of the most popular game franchises, the love of Zelda and Mario may keep the company going for a long time.
In preparation for this story, I put out a call to talk to die-hard Nintendo fans. I was inundated with responses. Among them, Brian White, 30, grew up playing the Zelda games.
Now he's got a daughter. "We named her Zelda," he says.