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Nintendo doesn't necessarily need advertising, because their franchises are so strong. I think people know there's gonna be a new Mario Party, or new Mario Kart, or new 3D Mario game, and they'll buy them if they like those games. Odds are if you like Mario Party 8 then Superstars will be right up your alley.

Nintendo also has the somewhat unique position of being the only one providing high-quality games in a variety of categories. If you want a couch racing game, you're playing nintendo. If you want a 3D platformer, you're playing nintendo. If you want a couch party games, you're playing nintendo. In fact if you want couch co-op at all you're playing nintendo, pretty much everyone else gave it up because you lose money.