More than any generation, many more people this generation are saying 'there are no core/AAA games on Wii'. Yet many of these people are the same people who are saying 'Nintendo is focusing too much on making the same junk over and over'. And really, you can't say both at the same time. If you are going to say Nintendo is making too many Mario games (or Zelda, Metroid or any other series for that matter), then you are saying Nintendo is making too many 'core' games period. They are delivering exactly what the fans are asking. More core games, made internally by Nintendo (not by a outsourced third party) and of higher quality of the games on the GameCube.
While third parties may be alienating the Wii, Nintendo themselves are proving they can deliver both quality and quantity on the Wii. And you better believe Mario is their biggest core pillar supporting the Wii. And of course there's the simple fact, like a lot of people are saying, all the Mario games are very different. Mario Galaxy is a totally different genre and plays nothing like Super Paper Mario. And New Super Mario Bros Wii plays nothing like Mario Kart Wii. etc.
Six upcoming games you should look into:
