This is a critical question.

The nostalgia of the 8-bit era is a powerful force. For millions of gamers around the world, the phrase "Super Mario Bros" evokes memories of glitchy tube televisions, rectangular controllers, and the frantic pursuit of rescuing Princess Peach. But in the modern age, gaming has shifted to mobile devices and high-definition screens.

If you are looking for the authentic 1985 level layout, this is likely the file you are seeking. It allows you to run, jump, and swim through World 1-1 to World 8-4 with the familiar PSP button layout (X to jump, D-pad to move).