The mushroom can be delicious and deadly. In the world of Nintendo, though, it is more than just a food. See how many mushrooms you can dig up.
Name the game, where to find the mushroom, and what the purpose of it is. Be nice and take turns. Only post one mushroom at a time (even if there is more than one type in a game), and wait for someone else to post one before posting another. There's plenty to go around.
I'll start.
1. In Super Mario Brothers (NES), the mushroom item can be found in ? blocks, and it causes Mario to become big.