Honestly, I for one and sick and tired of all this "casual" and "core" gamer bulls*** talk. It was old when it started. It's beyond old now. I'm almost 30 dude. I grew up playing Atari 2600, NES, and Arcade. By the time I was in my teens, SNES and Genesis, and then Playstation and N64 were "It". But never in my life did I hear anything about "core" games, OR "core" gamers. As a matter of fact, in my latter teen years and into early adulthood, I referred to MYSELF as a "casual gamer", meaning that I didn't play all the time anymore, but only sometimes. Then all the sudden that term takes on a whole new meaning, and it's some kind of gaming nerd pissing contest, to see "who's really a gamer and who isn't". You know, "I'm more gamer than you are", etc.
It's sad, and bothersome. If anyone in their right mind honestly doesn't consider MOST Nintendo franchises to be "core" games, then they're retarded, flat out. Mario, Zelda, Metroid, Kirby, Star Fox, Mario Kart, Earthbound, Fire Emblem, etc. That stuff is gaming lore. Old classics like Star Tropics and Kid Icarus are some of the hardest and most complex games of their time. Even something like Pikmin or Animal Crossing or Wii Sports has enough nuance to it, that it should be considered "worthy" by gamers.
The only people who would actually ever find themselves saying something as dumb as "The only people who like Nintendo Core titles, are Nintendo fans", are silly teenagers, and 30-something tardcore fanboys who can't get this "Playstation and Xbox are for KOOL KIDS, Nintendo is for BABIES" mentality out of their head. Nintendo never propagated that image. Dumbasses from my generation who bought into Sega's dumb "Genesis Does" ads, and onward through the years, have. End of story.