After you get left behind you must explore the moon and find resources! Sleep to regain energy! Use moon buggies to explore the surface of the moon faster! Use underground hyperloop pods for fast travel across the moon to reach other facilities scattered around to loot for food and resources! Explore abandoned mines for ores! Use tents to sleep on long journeys! Use resources you find to fix the communications tower to contact NASA to tell them to come find you! You have also discovered that alien creatures live under the moon surface in the mines and caves! Word has spread that there are ores worth way more than the most expensive thing on earth, and other companies might come look for it!? But being trapped on the moon made you feel a connection to it and feel like home! and if NASA does appear, will you stay on the moon and live life drinking beer watching the stars? or will you leave and go back to earth!?