What is a video game that you'd love to play, but no one has developed yet?

A game that captures the feeling of when Arthur Dent crash lands on that primitive planet in "The Hitchhiker's guide to the galaxy" and makes a sandwich. I want The Sandwich Maker.

You crash into this procedurally generated world. All the plants and animals are new every playthrough, and you slowly learn about them through experimentation and from the native population who has never heard of a sandwich and really doesn't do much except eat raw ingredients. When you cook the meat from an animal instead of eating it raw, they all lose their minds with wonder and you become the town's chef.

You harvest wild crops and cultivate better ones. You find ways to use the animal fat and meat and "milk", you find plants that work as food, maybe their seeds are great crushed up with a little water into a paste, maybe you need to dry them out, maybe you need to de-seed them and mix them with another plant to make it taste better.. on and on.

You need to work with the people there to make tools, and together you iterate out exactly what you need.

Eventually you have to find something that matches your randomised flavour pallette for the perfect sandwich. You assemble all the ingredients you've collected, cultivated, or created, with the tools and techniques you and the townspeople have developed, and you take a bite. It's perfect. You win.