I Really Have to Control You to End the Apocalypse

Qin You traveled through time, and there was also a three-story rural building attached to it. Outside the door are zombies wandering around, and inside the door are scarce supplies. In this precarious apocalyptic world, Qin You thought he could only sit at home and live in vain. Until the game called "Doomsday" on the mobile phone was finally installed. He opened it casually, and a thin girl scavenging outside the city appeared on the screen... "Oh, is it still a training game?"