Well this is interesting, according to the end of this article, Wario Land Shake has sold 150K in North America alone by the end of December.
http://wii.ign.com/articles/947/947929p1.htmlThis is great news since according to IGN, Wario Land Shake only sold around 20K in it's opening month in September. This means Wario Land has had some pretty good legs then. Nice to see that all the good word of mouth from gamers finally got the message across to people that Wario Land Shake is a great game to play.
Plus if you combine the fact that the game sold around 100K in Japan, that put Wario Land Shake at 250K between America and Japan. Now I don't know what it's done in Europe but considering most Wii games do better there then in Japan I'd imagine it's around 100K there as well. At the very least it has to be somewhere over 50K in Europe. This way we can at least say right now that Wario Land Shake has sold over 300K worldwide.
Considering Wario Land Shake is a 2d game that was released on a home console, with no advertising, and at full price, this is quite an accomplishment for the game. I'd imagine Nintendo is quite pleased with these results since by their lack of advertising they clearly expected the worse.
Hopefully this means Nintendo will have Good Feel make more 2d games for them in the future since they now know that 2d games can put up decent numbers on the Wii.