In this game, when Mario eats a mushroom, he becomes Super Mario - his body grows twice its average size, and he gains the ability to destroy bricks by pounding on them. Moreover, other regular bricks can also contain coins and rare items, so try to hit them. You can also find some special bricks with a question mark that may reveal more coins, and a unique item once hit. There are lots of coins scattered throughout the game, which you can collect.
Your main goal is to reach the flagpole on every level and try to save Toadstool from Koopa. Super Mario Bros is a realistic recreation of the original version, with graphics and soundtrack reproduced.