Subnautica 68598—an alphanumeric hymn scratched into the hull of an abandoned lifepod—hung in my memory like a promise. The number meant nothing to anyone else; to me it was a map to a story. The ocean around Lifepod 68598 was not empty. It breathed: slow, ancient currents stitched to the shipwreck’s bones, phosphorescent algae trailing like calligraphy, and strange silhouettes that blinked in and out of view as if the sea itself were rehearsing its lines.