Its marketed primarily to children, end of story. For children only, though? Nah. (the show, though, I would say so)
#1 and #7 only apply to the Anime, and #5 and #6 are partially valid.; obviously there are no mature themes and the art is enjoyed most by kids. The games are not hard, but I say they are more difficult than, say, most Final Fantasies.
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Congrats to SuperNiceDog on besting me in the Guru challenge!