Super Mario Land is a 1989 platform game developed and published by Nintendo for the Game Boy. Released as a launch title for the system, it is the first Mario platform game to have been released for a handheld console (not including the earlier Game & Watch). In gameplay similar to that of the 1985 Super Mario Bros., but resized for the smaller device's screen, the player advances Mario to the end of 12 levels by moving to the right and jumping across platforms to avoid enemies and pitfalls.
https://en.wikipedia.org/wiki/Super_Mario_Land