Nintendo hasn't changed at all imo. They haven't had the best of third party support since over a decade ago with the SNES. The main reasons to buy a Nintendo console have been first party games for a LONG TIME now.
Nintendo was never about hyper-violent games.
And as far as their "core" franchises... well they've released AAA or AA games in basically all of them. They haven't abandoned anything. People bring up Wii Fitt but like to pretend that the power pad and all those aerobics games never came out on the NES.
People will say Wii Music isn't even a game, then they totally forget about Mario Paint on the SNES.
They mention shovelware, but forget about how the first few years of the SNES were nothing but, "lets slap the word 'Super' in front of anything and it'll be a hit!!!"
Ninty is still the same. 14 year olds run the internet and they no memory of anything going past the PS2.
