What makes a 'good' game?

[Ultimecia]

Then it's a totally different thing altogether. Wii is not all about simple or casual games but it's the majority of the system because it's way cheaper to make games for the system (which means: easier to publish crap games). And Nintendo don't do only platformers (examples: Star Fox, Zelda).
So far, the only Nintendo franchise I like is Metroid, because it's not as simple as just butt-heading creatures, but you got to track back, get new weapons, and so forth.

Nintendo just decided to aim at a different market (the casual gamers, the guys who never had a video-game before. You can buy a Wii at your local Wallmart), that's all. And it got way too much money with that. And now all the other companies are copying it. Soon I guess you're going to be out of games to play if you stick to "I don't like new gameplay" mentality :/