Generations ago, a mysterious cataclysm buried a thriving region under endless sand — cities entombed intact, not destroyed. Now wind and shifting dunes never stop, slowly swallowing everything built above ground; water is scarce, and sand itself wears down bodies, buildings, and morale. Settlements include a walled central town, a lawless rougher district ruled by gangs, a wild frontier outpost, and a legendary buried city so deep that reaching it means near-certain death. Beyond lies an unmapped expanse few return from, and distant outposts marked by strange sounds and falling debris. The key technology is the sand-diving suit, it vibrates the sand letting trained users move through sand like water — tunneling, shaping, and collapsing it. Divers must manage air and battery carefully, since losing power underground is deadlier than losing air. Sand diving is essential and high-status work. With no central government, power belongs to whoever controls resources and force — gangs, salvagers, small family units surviving on their own. Status comes from risk and depth reached. Near the lost city lie old-world weapons, possibly capable of mass destruction. Factions quietly race to claim them, turning treasure-hunting into a fight for control over everyone's future. Based on Hugh Howeys book: Sand.