j-e-f-f-e-r-s said:
When was the last time that Nintendo developed and released, in-house, a terrible game? Not a 'merely good' game, or an 'underwhelming' game, or a 'decent to average' game, but an actual, honest-to-god terrible game? I can't think of one.
New Super Mario Bros. Wii immediately springs to mind, good lord that game was horrible, every stage felt like you were on ice, let alone how slippery it got when you reached the actual ice stages, it kicked you out of the stage each and every time you died and also had to reload the entire level each time you died, you constantly bounced off of any friends you played with which only ended up pissing everyone off, and making some elevator sections nearly impossible to keep everyone alive as the main hazard was accidentally coming into contact with each other, precision jumping was out of the question with how much you slid around the level, and they used that fucking lives system, so when somebody died too much they had to sit on their ass until everyone else died or they finished the level, which is a great idea for a co-op game isn't it?
Incidentally, most of the games you listed as positives for the Wii were not first party games.
Nintendo is a company I would have followed a while ago, but not any more, there's a few that I still would, Bioware, Valve Atlus, Tri-Ace (the combat in those games are almost always fantastic) and maybe From Software.