|First appearance||Mario is Missing! (1992)|
The Tricolor is a name for, among other flags, the flag of France. In all versions of Mario is Missing!, it is stolen from the top of the Eiffel Tower by Koopa Troopas raiding the city of Paris. Luigi must retrieve the flag, deduce where it belongs by asking passersby about it, and return it to the Eiffel Tower's information booth after answering trivia questions to prove its authenticity.
The Eiffel Tower does not actually have a flag on top of it in real life. In fact, even in the game, Luigi's photograph of the Eiffel Tower shows it without the Tricolor on it.