Throughout the game world, super mario bros encounters coins that contribute to his score. Special bricks marked with a question mark (?) may contain additional coins or reveal special items when hit from below by Mario. Some bricks, often concealed or invisible, may harbor extra coins or rare items. Upon obtaining a Super Mushroom, Mario grows to twice his size, gaining the ability to break bricks above him. If Mario sustains damage in this powered-up state, he reverts to his regular size rather than losing a life.