Battle for survival.! A post-apocalyptic apocalyptic strategy game.

"Sleep deeply, but not until you are dead."

UNDED FACTORY is a strategy game set in an apocalyptic world after a zombie virus infection explosion. In a post-apocalyptic world, the few survivors have regained civilized life by building colonies and starting collective life. A brief period of peace seemed to have come.

However, the survivors began to compete with each other for the supplies they needed to survive. They were forced to build colonies and defend them from the looting of other colonists. They began to arm, defend, and sometimes loot.

And they learned how to modify and enhance the zombies to turn them into their own tools.
It was the very beginning of the end, the beginning of an epic battle.

In December 2015, the first cases of the zombie virus were confirmed in the southern part of the former U.S. territory, and since then, the infection has spread rapidly, turning most of the population into the living dead.

In February 2016, the former U.S. CDC made a final announcement that although some vaccines had been found to be effective, they were unlikely to prevent the extinction of the human race due to the spread of the zombie virus.

March 2016 - Humanity's modern civilization has ceased to function.

Defend the colony and arm it.
Develop powerful weapons and turn the attacking zombies back into mute pieces of flesh. But it's not the zombies that scare us.

Manufacture them and turn them into weapons.
In this world, if you have nothing else to use, use zombies. Build research facilities to enhance and develop them.

Gather Survivors.
Unarmed civilians may seem useless, but they can be used for important purposes.

Join a stronger guild.
It's hard to survive alone in this desperate world.
With alliances, the odds are slightly increased.


Free to play online RTS
Advanced strategy and full-fledged strategy game
Infection system to cause a pandemic
14 different types of zombies that can be developed and enhanced

Translated with (free version)

What’s New

Version 1.4.3

・bug fix

Ratings and Reviews

3.3 out of 5
3 Ratings

3 Ratings

AmonAngel ,

Still buggy

Nothing really works. Links don’t work, no way to get support. Failed app that hasn’t been removed from market. Do not get.

Kramer529 ,


I bought a 3rd builder. Logged back in a couple hours later and now I'm back to 2. Get my third builder back and it goes to 5

RealTalk137 ,


Every time I request units or the undead my connection is lost and the game starts over

App Privacy

The developer, BTD STUDIO Co.,Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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