My Sims should never have made the transition into a party game. The main flaw here is that it, quite simply, is no fun at all. Most of the minigames are utterly dull and since the control scheme is basically broken there's no chance that the younger audience will be able to master the game. There are a whole slew of party games for the Wii that offers a better experience than this.
AceGamezMy Sims Party is easily the weakest of the My Sims games released so far.