One of the game's most iconic features is its power-up system, which allows players to collect items that give them special abilities. For example, the Super Mushroom makes Mario grow larger, while the Fire Flower allows him to shoot fireballs. These power-ups not only add depth to the gameplay but also provide players with a sense of empowerment as they progress through the game.

The game's world is also an essential part of its appeal. The Mushroom Kingdom is a vibrant and imaginative fantasy world filled with unique enemies and obstacles, such as Goombas, Koopa Troopas, and bottomless pits. Each level has its own theme and challenges, and the game's world is full of hidden secrets and Easter eggs for players to discover.