If they had SSBB, M&S and Carnival Games as there choices, out of the wall of crap party games that now flood Wii shelves then they obviously had done some research already. Likely asked a friend what they had or asked a child what they wanted and those are games the kid played at a friends already.
I played Carnival Games, didn't like it either. But the only way it sells the way it does, which is still well above the average mini-game collection, is good word of mouth.







