I'm mostly curious about: - How is it possible to move back and forth in the game as shown around 08:00? I don't know if the game compiled to native code direc

I'm mostly curious about: - How is it possible to move back and forth in the game as shown around 08:00? I don't know if the game compiled to native code directly but I think it's easier if it's running inside a VM (and I do see "vm" in the video) - How does one make these kind of tools in general? I feel these are super helpful for any game developer out there.