Super Mario 64 Online Multiplayer Game That Supports Up To 24 Players.
Modders Kaze Emanuar, Melonspeedruns and Marshivolt created Super Mario 64 Online, a rom that allows 24 individuals get together and play Mario 64 together. You’ll need an emulator to run the rom and the download link is available at the comment section of the youtube video at no cost. Be sure to get it quick before Nintendo shuts it down.
If you want to give Super Mario 64 Online a try, the online tutorial is pretty straightforward:
In Super Mario 64 Online, there are a few characters from the Mario universe to play as, each with different abilities and unique powers. The core game was never intended to be multiplayer so glitches can be expected. There are plenty of servers to join and you can play the game cooperatively with others.