Reality

Real Life

From tvtropes: Mohs Scale of Science Fiction Hardness:

A Shared Universe which spawned its own genre, known as "Non-Fiction". Despite the various problems noted at Reality Is Unrealistic, it is almost universally agreed that there is no other universe known so thoroughly worked out from established scientific principles. The Apollo Program, World War II, and Woodstock play out in this franchise.

Kardashev Ratings