The base Super Mario 64 but with Ghostly Dark's Textures! I lowered them down to 32x32 and added them to the original mario 64, so I con just load the texture pack up like mario 64 and play! It even counts it as mario 64 keeping your saves!
(I did Customize a few things, like Tall Tall Mountain having grass instead of the weird dirt.)
I added in all the textures manually!
All textures credited to GhostlyDark, I just made this into a rom to play like the normal super mario 64, and well the textures instead of being upscaled are like the original 32x32.