Super Mario 64 Multiplayer is a fan-created ROM hack of Super Mario 64 that introduces multiplayer capabilities to the classic Nintendo 64 platformer. Unlike Super Mario 64 Splitscreen Multiplayer, this mod allows multiple players to navigate the same screen rather than splitting it, enhancing cooperative gameplay within the original game's environment. The mod can also be integrated with various other modifications.
Super Mario 64 Multiplayer is a ROM hack/mod of Super Mario 64 which adds multiplayer support for the original game. It can also be added to many other mods.
It shouldn't be confused with Super Mario 64 Splitscreen Multiplayer, the former doesn't make the game splitscreen, both players share the same screen.