Mixed Reality Pulling Assets... anyone tried this?

I just came across this concept of pulling assets in mixed reality, and I’m super curious about how it works. I saw someone do this with MK7 on the 3DS emulator, but IDK the process. Does anyone have insights or tips on how to do this?

I saw someone do this with MK7 on the 3DS emulator, how do?

It’s all about extracting the game files and using them in a mixed reality setup. But it can get tricky.