Metroid Prime Almost Included Super Metroid

Almost 20 years after its release on the GameCube, Metroid Prime is still looked back on by many fans as a classic game that helped redefine the Metroid series. The game was the first installment to make the jump to 3D, following Samus Aran as she took on dangerous threats on the planet Tallon 4. Despite this drastic improvement to technology that added new life to the franchise, the developers apparently had intentions of including a past 2D game in the final version of Metroid Prime as well.

Source: Gamerant