
Yeah, that's one of the problems with this and some other WarioWare games, they don't have lasting appeal. Unless you're like me and are just easily entertained.
The Wario Land games are awesome. They did release Wario Land: Shake It on Wii a few years ago. It wasn't as good as the GBC titles, but it was sitll a fun 2-D romp with fantastic hand drawn animation. AND Captain Syrup returned, so I was happy about that.