I remember programming a Lego robot with this visual puzzle piece method as a kid. It was awesome. I have a feeling something similar already exists for general

I remember programming a Lego robot with this visual puzzle piece method as a kid. It was awesome. I have a feeling something similar already exists for general purpose programming. I can definitely see something visual-based that hides a lot of unnecessary details working for a lot of basic applications - at least to get the skeleton of an MVP up.