A disease has altered the personalities of the people living in the fortress. They were once living on the earth as normal humans, but they're now weak-minded zombies that only seek to destroy life. When someone learns that life exists in the fortress, it gives them a boost of energy and motivates them to hunt down and kill life within it. To stay safe from zombies, you need a home that's far away from them. This way, you and others can sustain yourselves without being affected by the phenomenon. A threat to our world has emerged. Our best bet is to band together with the survivors inside the fort to fend off any zombie attacks.

Living beings are eliminated without pity or remorse by Ruin, whose appearance was that of undead hordes covering every corner of the world. Because of this, the world has become a single lifeless base where life continues. Since zombified individuals can appear from any direction, it's best to be prepared when they find you. They'll relentlessly attack you until you're ready to face them. During the zombie apocalypse, people flee to this location after surviving. It's also where they fight off the undead. A safe haven, this building nurtures life in a post-apocalyptic world.

Zombies know you're hiding behind the bases walls and constantly approach you. They're adept at hunting you down and can attack you at any time. Because of their desire to destroy their lives, the number of zombies attacking you increases. You’ll need to prepare your mind for more intense zombie battles by defeating each wave of zombies. During a fight, you must remain calm and focused. In order to complete the mission and save more people, deal with each wave of corpses. Doing so grants the united forces greater life survival capabilities. In addition to this, the people in the base combine forces with each other to fight back against the threat.

In order to accommodate more people, you need to increase the size of your base. Finding survivors increases the fitness of returning them to the base; this results in bonuses and upgrades. Additionally, finding survivors increases the chance of receiving bonuses. You can also use your weapons to kill other zombies and retrieve them from your storage area on the floor. You’ll travel with your allies to locate and eliminate the walking corpses. Before the zombies invade your fortress, you can stay alive thanks to the loot. Look for weapons and take life from the zombies outside your fortress to fight them. After a deadly zombie pandemic, the world lost all life that had previously existed. Existing humans now use lifeless corpses as their tools; only their singular thought is to locate and obliterate any remaining living beings on the devastated earth. During the apocalypse, each undead wants to live in the fortress they're created in. In order to survive their barrage of attacks, someone needs to defend and fight back. Protect the fortress from zombies by leading survivors out of it. Additionally, use a downloadable mod to build defenses and protect themselves from each wave of undead.