For a few years now, Mario fans have been making their own stages on the Wii U and Switch thanks to Super Mario Maker 1 and 2. Will they ever get around to making a toolset to build your own 3D Mario stages? We'll have to wait and see on that one, but in the meantime, fans have stepped in to make that idea a reality.
Super Mario 64 Maker is a fan-made mod that gives you various tools to create your own Super Mario 64 stages. Place platforms, enemies, items, and more to create your own custom stages. This kind of project really needs fan support to take off, and there's definitely a chance Nintendo is going to swoop in and kill it. Let's enjoy Super Mario 64 Maker while it lasts!