Anything you experience is a reality...

Why should dreams or stories or imagined experience be excluded from the realms of reality? At the very least, let's acknowledge a spectrum of realities. You stir from a dream into what appears to be a "senior" waking reality. Certainly, there could be many realities that are senior to our waking reality, and some of those may actually be ones currently classified as "junior" realities. As I'm writing this I'm worried that these are the kinds of arguments that people who create full-immersion video games use. Can I put some caveats on what is and isn't real after all?