When the Apocalypse Came, I Survived by Relying on Takeout

The apocalypse has arrived, plunging the world into a zombie crisis. Hiding beneath the ruins, I suddenly heard a mechanical voice: [SSS-level dungeon detected. Host may choose to bind to either the Delivery System or the War God System.] Looking at the densely packed reward panel, my brother pressed the blue button without hesitation: "What kind of bullshit Delivery System is this? It's the apocalypse, are they feeding ghosts?" "I want the War God System! I'll build the biggest base in the apocalypse and make everyone kneel and call me boss!" The electronic voice coldly replied: [Congratulations, host, you have successfully activated the War God System!] [Physical modification in progress, strength...]