Ahem...cough cough wheeze
Pardon me, my health is rather delicate. Anyway, I believe that there should be all the games from Mario Party 2+3, plus 120 new ones (for 120 stars in SM64). There should be these characters: Mario, Luigi, Peach, Wario, Yoshi, DK, Goombario, Kooper, Bombette, Parakarry, Lady Bow, Watt, Sushie, Lakilester (ahem Spike), Daisy, and Waluigi. That makes 16 characters, and includes all of Mario's Paper Mario teammates.
If you could include the Mario RPG teammates, there would be Mallow and Geno. Unfortunately, since Nintendo ditched Square, I guess that they don't get to use these two characters.
Get the point?
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