Want to know the real reason why Nintendogs is one of the most "important" games? Because everybody has it. Nintendo is reporting that 13.6 million copies of the game have been sold worldwide. Compare that to Brain Age and its sequel, which sold a combined 12 million copies. We knew Nintendogs was massive, but we kind of didn't realize how massive. As we alluded to in the title, we wonder how many of those copies are still getting daily use.

Another interesting tidbit from the financial report: Nintendo made 2.1 billion yen (about $17.5 million) last year from their non-video-game products, including playing cards. And before you ask, they probably did count Nintendogs as a video game.

This article was originally published on Joystiq.

Xbox 360 Elite Q&A