They Are Billions is a strategy game in a distant future about building and managing human colonies after a zombie apocalypse destroyed almost all of human kind. Now there are only a few thousand humans left alive that must struggle to survive under the threat of the infection. Billions of infected roam around the world in massive swarms seeking the last living human colonies.

Game Modes


In the campaign mode, you have to help the surviving humans to reconquer their country. There are dozens of missions with different goals: building colonies, tactical missions, rescue missions... You can decide the path of progress and mission - research new technologies, advances and upgrades to improve your colonies and army.

Survival Mode

In this mode, a random world is generated with its own events, weather, geography, and infected population. You must build a successful colony that must survive for 100 days against the swarms of infected. It is a fast and ultra addictive game mode. We plan to release a challenge of the week where all players must play the same random map. The best scores will be published in a leaderboard.

Real Time with Pause

This is a real-time strategy game, but don’t get too nervous. You can pause the action to take the best strategic and tactical decisions.

In Pause Mode, you can place structures to build, give orders to your army, or consult all of the game’s information.

This game is all about strategy, not player performance or the player’s skill to memorize and quickly execute dozens of key commands. Pause the game and take all the time you need!

Build your Colony

Build dwellings and acquire food for the colonists. They will come to live and work for the colony.

Collect resources from the environment using various building structures. Upgrade buildings to make them more efficient.

Expand the energy distribution of the colony by placing Tesla Towers and build mills and power plants to feed the energy to your buildings.

Build walls, gates, towers, and structures to watch the surroundings. Don’t let the infected take over the colony!

Build an Army

What kind of people would want to combat the infected?

Only the maddest ones. Train and contract mercenaries to protect the colony. They demand their money and food, and you will have to listen to their awful comments, but these tormented heroes will be your best weapon to destroy the infected.

Every unit is unique and has their own skills and personality – discover them!

Thousands of Units on Screen

Yes! They are billions! The world is full of infected creatures… they roam, smell, and listen. Every one of them has their own AI. Make noise and they will come – kill some of them to access an oil deposit and hundred of them will come to investigate.

We have created our custom engine to handle hordes of thousands of the infected, up to 20,000 units in real time.

Do you think your colony is safe? Wait for the swarms of thousands of infected that are roaming the world. Sometimes your colony is in their path!

Prevent the Infection

If just one of the infected breaks into a building, all the colonies and workers inside will become infected. The infected workers will then run rabid to infect more buildings. Infections must be eradicated from the beginning, otherwise, it will grow exponentially becoming impossible to contain.

Beautiful 4K Graphics!

Prepare to enjoy these ultra high definition graphics. Our artists have created tons of art pieces: Beautiful buildings with their own animations, thousands of frames of animation to get the smoothest movements and everything with a crazy Steampunk and Victorian style!

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First, thanks for all this wonderful support! The amount of comments, feedback, videos, Twitch streams... is simply amazing! There are players that are making colonies that we have never seen in our play testing. Just look this one with almost 16K colonists!

We are glad to see our game engine moving softly these huge scenes with thousands of colonists, hundred of buildings and dozens of thousands of zombies.

And here goes a quick update to inform you of the game’s development progress.

Since the release on December 12th, we have been very busy working on several important technical aspects of the game:

Solving Installation Issues
With so many players and computers, sometimes some components required by the game are not correctly installed. Therefore, some players have had problems starting the game.

DirectX: It seems the Microsoft install is not always the correctly installed version, so we have added the exact libraries to the game folder and DirectX is no longer needed.

Visual C++ Runtime 2017: The same issue here. This has been the source of a lot of problems, giving the error HRESULT: 0x8007000B (thanks, Microsoft). Now the libraries are compiled statically, so that installer is no longer needed anymore.

There are a few more technical issues that we are studying such as problems with some monitor refresh rates.

Solving Bugs and Crashes

We have fixed a lot of small bugs detected by the players and refactored some parts of the code to avoid random crashes. This new version should be the most stable one.

Multi-language Support
As They Are Billions is being played massively in all parts of the world, we have worked on implementing the multi-language support. And furthermore, we have implemented an automatic system that allows the translators to update the game with their changes very easily. So, all the languages will always be up to date and won't delay the development at all.

Spanish Available

Spanish is the first language added and is now available on the options screen. It is available in the Version 0.5.

New Languages Coming
We expect in two or three weeks to have the next languages: Chinese (simplified and traditional), Korean, Japanese, German, French, and Russian. We are also trying to add Brazilian Portuguese, Polish and Italian.

New Content Delayed
Unfortunately, because of all the work related to the technical aspects we have delayed the development a few weeks for the new building The Tavern and the feature Challenge of the Week. But don't worry, it will be ready very soon. All the developers want to test our skills against all the players playing the same map. That is going to be very fun!

Thanks for all the support! I hope everyone has a wonderful holiday break and a happy start to 2018.

See you soon!

Visit our Steam Store page of They Are Billions to purchase They Are Billions!

They Are Billions - Survival Mode Available Now

They Are Billions - Survival Mode Available Now

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They Are Billions Coming Soon to Steam Early Access


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They Are Billions Update: Survival Mode Beta Available for Pre-Order

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Comments  (0 - 10 of 13)

This game seems very cool, it deserves to have multiplayer.

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If you’re looking to play some custom content for the game, check out the community made level editor, which allows you to make custom maps.

Here’s a link to a video about the level editor:
Here’s a link to a video that shows off one of the community made maps, which features an endless mode:

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Definitely voting for this amazing thing. I don't have it yet, but **** me if I don't plan to get it in the future. When I'm not poor!

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awesome! :DDDDD, wil be free2play?

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I'm still enjoying Lords of Xulima. This looks amazing! Can't wait...

(Buena suerte gente, que no es facil desarrollar juegos en la tierra de Cervantes :p)

Reply Good karma Bad karma+2 votes

When I get muns I'm probably gonna snag the best edition. This game looks great!

Reply Good karma Bad karma+1 vote

Looks cool, take our money and give us early access now!;-)

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Definitely excited about this one

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They Are Billions
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Numantian Games
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Latest tweets from @numantiangames

They Are Billions has reached 500,000 players! @theyarebillions Thank you for all of your support. We're still hard…

14hours ago

RT @theyarebillions: New house models coming soon. #TheyAreBillions #gamedev

Jan 18 2018

RT @theyarebillions: They Are Billions Beginner Tutorial by Misa Perfect - Second Nature Gaming #TheyAreBillions

Jan 15 2018

RT @theyarebillions: 'They Are Billions' Resurrects Real-Time Strategy in Spectacular Fashion #gamedev #TheyAreBillions

Jan 10 2018

They Are Billions Update: Multi-language Support - Spanish Available

Dec 29 2017

RT @theyarebillions: They Are Billions: Now Reached a Count of 200,000 Survivors. Thank you all for your support!

Dec 26 2017

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