Could a “system apocalypse” or something similar ever really happen? Heat Death explores this premise, striving for the highest level of hardness on the Moh’s Hardness Scale for science fiction. If some premises or events don’t make sense at first, I’d encourage you to keep reading. No laws of physics are broken for the sake of the plot, and choices were made as conservatively as possible. If you’re interested in a story that incorporates a wide range of scientific concepts from diverse fields, then this is right for you.