A game app unlocked as a reward for completing Main Quest 1 of the Doomsday Cottage Construction Plan (upgrading the cottage to Generally Comfortable rating with all data at level 80). The supermarket can randomly descend to any location in reality when the player is online or idling, and hides when logging off. It features virtual clerks for checkout, merchandise areas that increase with level, and customers scan to pay with the system converting payment to gold. Wen Xi set it to the Warmth Section with down jackets, electric blankets, and heat packs at maximum inventory.