Legend:

• Green blocks, black tiled underground: solid object that cannot be destroyed at the start of the game.
• Golden blocks: Hitting these from below gives the player one coin. Collecting coins allows the player to obtain additional lives.
• Red circle: an enemy "Goomba" that slowly walks to the left. If it hits Mario from the side, Mario loses a life, though if Mario jumps on top of it, the enemy disappears.
• Green circle: A power-up that appears once Mario hits the golden block from below. This power-up then moves to the right and drops off the platform. The power-up turns around when it hits the green obstacle to the right and subsequently starts moving left. This makes it difficult to dodge once it starts moving.