Maybe theyre taking along time to make it a good game like the N64 Mario Partys. Maybe they made Wii Party cuz they wanted some minigame game to come out soon while they work on MP9.

there already is like a million mini games games out for wii,most suck

MPDS sux so badly, but u can have your opinion

Well actually Mario party 9 has not come out because, they are still thinking of new Mini games, it even said on Mario Party Wiki.So my guess is that it may come out December 2011.

my guess would be that they are trying to incorporate wiimotionplus, wii balance board, ect. in to the next mario party, and/or trying to include more characters. lets not question why its not out, but hope that when it comes out it wont be ass gimmicky as other party games on the wii. (cept rabbids. rabbids FTW. XD)
@TBY Yah Mii Party is a fail, but at least its not as bad a fail as BS move or Xbox Shitnect.