i KNEW mario party 2 had a final boss! it's just too awesome to not have one.but yeah after you get past world 8, you hit this world 9 save space, which doesn't make sense at first because there are no more minigame spaces. you go to the finish, and toad congratulates you but then says that since it took you so long, he can't give you your prize and that you have to start over. idk if choosing "go back to world 1" actually made you go back because i chose not to. then another toad comes in and reveals that the toad you were just talking to was actually three baby bowsers disguised as one toad (idk how). then you have to beat the baby bowsers in shell shocked. but they only go for you! it took me about 30 tries.