Best party game for the Wii yet! However, it gets boring quickly.
Mario party 8 was absolutely beautiful, but not NEARLY as fun as this game. I wouldn't say this is a must have, because it's not, but there isn't exactly anything superior right now in my opinion. Each individual mode is far too short with limited possibilities, and while some of the games are incredibly simple and bland, others are creative and make good use of the wii motion controls. They are on the right track and if they decide to make a sequel I'm sure it will be amazing.
So if you're looking for a game that can kill an hour or 2 (if you're lucky) with the family or some friend I think this game is worth checking out.