What are your Dream Game Ideas that are Impossible to make?

Every gamedev has some kind of vision or dream of a game they want to make, but currently can't make, because of budget or because it is just impossible technically seen at the moment. I myself have those and I just find it interesting to read through those dream ideas, because in the most cases we put a lot of thought into them. (I am also not a corporate spy so dw 😭🙏🏼(trust))