i really dont get the whole, 'because the graphics are cartoony its for kids', or the fact people think if kids can play something then its not for them. the whole point of nintendo was and is that anyone can play these games. shrek is cartoony, is that for kids? no.
also who are these kids? i tend to find people just call kids anyone younger than themselves kikds. 18 year olds playing gears of war say mario is for 11 year olds and not mature enough. but then you have the 11 year olds playing halo 3 and GTA and saying that mario is for 6 year olds. personnaly i find the divide between mario players and non mario players to be based more on the type of person rather than age.
but back on topic, id advise if you want something different try different franchises. if your bored of mario, metroid and zelda try battalion wars or fire emblem or any other nintendo franchise you havnt played yet. i heard endless ocean was pretty creative if your looking for somehting very different
nintendo fanboy, but the good kind
proud soldier of nintopia