When Mario starts the level, he must walk towards three Question Blocks, one with the other two not connected to it and the other two connected to one another. You're also able to see yellow hills in the background.

The terrain of this level is grass-themed with several slopes and Warp Pipes.

As a background element, Princess Peach's Castle can be seen from the beginning section of the level before the first ledge. As it is the first level in the game, these enemies are introduced to this level.

Even if players try to run from the first mushroom, they built the level to make it hard to escape, so that the player would hit the mushroom, Mario would get big, and they'd understand something new about the game.This level itself is inhabited by ten Goombas overall, and four Koopa Troopas, two red and two green.

Jumps were planned in such a way that players would be intrigued by the question blocks, tap them, and discover surprises.

Mario only starts out small so that he can then become big, and players would be more satisfied with bigger Mario.

Miyamoto dives into the philosophy behind the design, explaining that the familiar first level was created to make it as intuitive as possible for new players to understand the game mechanics and to experience wonder at what they find. For example: Tezuka, though perhaps less known than his counterpart, is also responsible for a good chunk of classic Nintendo game design in titles like The Legend of Zelda. level, World 1-1, with help from fellow game designer Takashi Tezuka. In this video captured by Eurogamer, legendary Nintendo game designer Shigeru Miyamoto walks us through the iconic game design of the first Super Mario Bros.

Super mario bros. world 1-1