The mushroom is a basic power-up in A Koopa's Revenge 2. Accessible from the first level, the mushroom takes the place of the Shell from A Koopa's Revenge, restoring Koopa's shell if damage was taken and it was lost. If Koopa, Goomba or Shy Guy are vulnerable, then the mushroom can be used to give them one extra hit.
When being used, the mushroom will change Koopa's, Goomba's or Shy Guy's appearance to:
- Give Koopa their shell.
- Change Goomba back from a Galoomba.
- Give Shy Guy back their mask.
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