During a lengthy Q&A session on Nintendo’s official website Shigeru Miyamoto revealed that the critically acclaimed Mario 64 initially had a multiplayer mode, but it was sadly scrapped due to hardware restraints.
Iwata: Ever since Mario Bros., you’ve had your heart set on making a multiplayer Mario game. You’ve tried each time, but it’s never quite come together… Even with Mario 64, it started with Mario and Luigi running around together, didn’t it?
Miyamoto: That’s right. The screen was split and they went into the castle separately. When they meet in the corridor, I was incredibly happy! (laughs) Then there was also the mode where the camera is fixed and we see Mario running away, steadily getting smaller and smaller.
Iwata: Yes, that’s right.
Miyamoto: That was a remnant of an experiment we did where Mario and Luigi would run away from each other but you could still see them both. But we were unable to pull it off…

Interesting, Mario 64 with multiplayer would have been awesome
No don’t give up its still possible! Release that Mario 64 with online multi player and call it Mario 64 Split Screen Remix!
Another game you should release with online play is is Smash Bros 64! Make that online with no lag and ill buy it first day it comes out.
yes, just make it online with no lag! also make it cure cancer. also plz put crash bandicoot in he is kewler thatn mario
What, is Wii really that handicapped that it can’t have a single online game without lag?
waw i love it
seriously? We already knew this. They took it out of the original, and then implimented it into the DS version.
You’re right, I completely forgot about it until now :)
Make it! And release it for N64 and Wii! (N64 won’t have online though)
Woah. That wouldvé been very good.
WOW very interesting especially the multilayer feature.
Nintendo should make an upgraded version on Wii U/3DS
Guys, a critical reason this was scrapped was Hardware limitations. Nintendo likely had all of your ideas planned for the 64DD. You put the SM64 online disk in, and it connects you to hundreds of other players. 64DD, however, died and so did online SM64
There is a way to play multiplayer using a pc emulator!