It started with an accident. Deep inside a secret research facility, an experiment went horribly wrong. Toxic chemicals spread through the labs, turning scientists and security personnel into mindless, flesh-hungry creatures. The outbreak couldn’t be contained. Within hours, the entire area was overrun, and the infection spread beyond the facility’s walls.

You are the last survivor of that disaster. Barely escaping with your life, you set out to find a safe place, a spot where you can build a stronghold and make your last stand. The undead are everywhere, growing in numbers and strength. If you want to survive, you must gather resources, fortify your defenses, and recruit others who are still fighting to stay alive.

Start small with a simple shelter, but don’t stop there. The undead are relentless, and your base needs to be strong enough to withstand endless waves of attacks. Construct walls, build turrets, and research new technologies to improve your chances. Train survivors, equip them with weapons, and turn them into an elite defense force.

The world outside is dangerous, but it also holds the key to survival. Scavenge abandoned buildings, uncover hidden resources, and face powerful zombie bosses that threaten everything you’ve built. As you expand your base, you’ll encounter other survivors—some looking for refuge, others with their own agendas. Choose your allies wisely, because in this new world, trust is as valuable as firepower.

The undead are coming, and there’s no escape. The only choice is to fight, grow stronger, and turn your base into the last beacon of hope in a world consumed by darkness.

Idle Base: Zombie Outbreak lets you build and expand your stronghold even while you’re away. Your base will continue gathering resources, upgrading defenses, and training survivors automatically, ensuring that you’re always ready for the next attack. But don’t get too comfortable—every day, the horde grows larger, and the fight for survival never truly ends.

The outbreak has begun. Your stronghold is the last hope. Will you survive?