I think a general knowledge quiz, something like this:
(This is a competition for the forum though, keep in mind.)
* Finish this sentance:
"Sorry but the princess is in another _ _ _ _ _ _"
(Also have to have correct spelling and punctuation).
* Bowser is the _ _ _ _ Koopa ( Enter the word )
Or just simple questions such as:
* What color is Peach's dress?
* Who is Luigi's love?
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You need 10 or whatever players, 10 rounds with about 10 questions in each round, each correct question equaling 1 point. After each round... whoever has the lowest points is eliminated.