Super Mario Bros.
Mario has several "power-ups". A red and white mushroom will make him big. If Mario is big and if he touches an enemy, he gets smaller; he will not die. If Mario is big and he hits a question block that has a power-up, a fire flower will come out. The fire flower will give him the power to throw fireballs, which can defeat enemies. If he gets hit as Fire Mario, he will go back to being small Mario.