The End of the World: My Bunker Can Be Infinitely Upgraded

Travel through the apocalypse and become the castle lord at the beginning. Summoning residents and collecting resources, others develop slowly, but my residents are extremely talented, their income increases, and their progress is rapid! Frighteningly powerful enemies, easy to kill in seconds, terrifying nuclear radiation land, bulldozed by the army. Others are struggling to survive, but I am enjoying the fun of upgrading!