A Reverse Mushroom is an item in Mario Party 3. It is a green mushroom (resembling a 1-Up Mushroom) with a red U-turn symbol on it; it is Donkey Kong's favorite item. The user can make any player on the board (including themselves) go in reverse the next time they roll a Dice Block. If they reach a fork or area with multiple paths, then the person inflicted can choose to go forward in another direction, or still go backwards. Reverse Mushrooms are sold at Baby Bowser's Joint for 5 coins. Using a Mushroom, Golden Mushroom, Warp Block, or Magic Lamp negates the effects of a Reverse Mushroom. Using a Reverse Mushroom when afflicted with Bowser’s Curse will combine the two effects.
Names in other languages
| Language | Name | Meaning | Notes |
|---|---|---|---|
| Japanese | さかさまキノコ[?] Sakasama Kinoko |
Upside-down Mushroom |