Mystery Box (item)
From the Super Mario Wiki, the Mario encyclopedia
Paper Mario series
The first appearance of the Mystery Box in Paper Mario goes under the name Mystery?. When used in battle, a roulette will appear, containing the following items, that will be used right after the roulette stops on an item:
These items can also be used for cooking, yielding a Mistake half the time, and a randomly selected one of twenty-three recipes otherwise.
Such items are on sale at Boo's Shop and the Bowser's Castle shop. They can also be found in a hidden block in the Shy Guy playground of Shy Guy's Toy Box, in a hidden block near the shores of Lavalava Island, and in the lava area of Bowser's Castle.
Paper Mario: The Thousand-Year Door
When used in battle, a Mystery has the effect of one of the following items:
Super Paper Mario
Mystery Boxes appear under their current name in Super Paper Mario. When cooked, the outcome can be random, or more commonly, a Mistake. However, the set recipe is a Miracle Dinner. The Mystery Box can be bought in Flipside Arcade for five Flipside Tokens, at the Downtown of Crag for three coins, or carried by a Lakitu. Similar to Paper Mario: The Thousand-Year Door, a random item will appear which can be any item from a Catch Card to a Thunder Rage.
Paper Mario: Sticker Star
Mario & Luigi: Dream Team
While Mystery Boxes do not appear in Mario & Luigi: Dream Team, another item known as a Secret Box with similar effects appears. Secret Boxes mimic a random badge effect, unlike Mystery Boxes, which mimic a random item.
Names in other languages