1. Start the game: Once you have the game, start it by selecting the game icon on your device.

2. Select the game mode: You can choose between 1 player or 2 player mode. In 1 player mode, you control Mario and guide him through the levels to rescue Princess Toadstool. In 2 player mode, you can choose to play as either Mario or Luigi and compete or cooperate with another player.

3. Play the game: Use the control buttons to move Mario, jump, and interact with objects in the game. The goal is to guide Mario through various levels, avoid obstacles, defeat enemies, and collect coins and power-ups to reach the end goal.

4. Beat the game: There are different levels and challenges in Super Mario Bros. The game is won by completing all the levels and defeating the final boss, Bowser, to rescue Princess Toadstool.