you can't,but if you have an emulator on your computer and download toads tool 64
and on toads tool 64 go to edit textures and find a sign that says l is real and go to mario's size and type on the number size L Is Real and here you go.now you can play as luigi but the proplem is when he loses or take off caps,his head turns big.
Chat with our AI personalities
You can’t play as luigi in Super Mario 64! Because he is not in the game
You can do it on the DS version. On the N64 version,the statue says"L is Real 2401". You have to run around the fountain for one minute if Luigi is an unlockable character. That's why the answer is Yes.
Luigi is not in Super Mario 64. But he would likely just be Mario with a green shirt, green hat, and an L on his hat.
If you are referring to an emulator that that runs N64 roms just go to www.pj64-emu.com For the super Mario 64 ROM go to www.emuparadise.org.
The developers were trying to be funny by making fun of luigi.