Guide to the Nested Worlds

Level 0: The “real” world.
Level 1: The “Great Underground Empire”, a realm within a text-based adventure game.
Level 2: Olympia, a cyberpunk realm simulated on a computer within The Great Underground Empire.
Level 3: Polis, an Ancient Greek-styled digitized world, simulated on a network of DNA computers within Olympia’s inhabitants’ brains.
Level 4: A Victorian-era steampunk world, created within Polis’ computational network.
Level 5: The Dining Philosophers, a chamber where philosophers dine, brought to life by a vast steam-powered Turing Machine.
Level 6: The Library of Babel, an infinite expanse birthed from Jorge Louis Borges’ imagination.
Level 7: Fairy Tale Land (AKA “Meinong’s Jungle”), a multitude of worlds spun from the tales housed in the Library of Babel.