The N64 had a very hardcore attitude. It just didn't get Metal Gear Solid, all of the 5th gen REs, or Square Enix RPGs.
Gamecube also tried to be hardcore but Mario Sunshine and WindWaker were a little too "kiddie" in appearance for quite a few at the time.
Fortunately for Nintendo, Mario has had a great resurgence in popularity in recent times (after starting to hit a low in the Dreamcast and early Playstation 2 years) that I think began with the Soda commercial and Mario 64 then New Super Mario Bros. on DS and has carried through to Galaxy and the upcoming New Super Mario Bros. Wii and Galaxy 2.







