Board Thread:Questions and Answers/@comment-28240747-20170322101832/@comment-26186871-20170404180432

Mario Party 1, and ONLY Mario Party 1, actually had a special message if you got 99 stars.. Something along the lines of "you can't get any more stars than this!"

But that limit is in every game up to Mario Party 8. In Mario Party 9, you can have up to 999 mini-stars.