They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse?
Recent Reviews:
Very Positive (304) - 81% of the 304 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (11,458) - 85% of the 11,458 user reviews for this game are positive.
Release Date:
Dec 12, 2017

Sign in to add this item to your wishlist, follow it, or mark it as not interested

Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“This game has two game modes: Survival and Campaign. As the Survival mode is already fully playable, we think it is a great idea to let the players play it and take their feedback to improve the game while we work in the Campaign mode. All the feedback and improvements will be applied to the Campaign too.”

Approximately how long will this game be in Early Access?

“As this game can be expanded in a lot of ways, we will keep it as Early Access as long as needed. With that said, we expect to finish the Campaign mode in 2019.”

How is the full version planned to differ from the Early Access version?

“The Early Access game will start by including the Survival Mode. In several months, we will include the Campaign mode, the story mode, with hand-crafted levels, crazy NPCs, and lots of other fun features! The final release will include both the Survival and Campaign mode.”

What is the current state of the Early Access version?

“The Early Access game now contains the Survival Mode. In this mode, a random world is generated and the player must create a colony that can survive in an apocalyptic world for a set period of time.”

Will the game be priced differently during and after Early Access?

“Early Access will be cheaper than the final release. However, we have not finalized the price for the final release.”

How are you planning on involving the Community in your development process?

“We plan to be extremely involved with the community. We love community feedback! We already did this with our last game Lords of Xulima.”
Read more

Buy They Are Billions


Recent updates View all (24)

January 16

Development Update


First of all, happy New Year! We hope your New Year is off to a good start. We’re very grateful for how exciting last year has been for our studio. There are big plans for this new year and we are sure that it will be too for the great community of They Are Billions. Now, let's talk about the development of TAB, What are we working on right now?

The Level Editor

We continue expanding and improving the game level editor as it has proved to be very successful amongst the community. There are already more than 500 levels published, some of them really complex and sophisticated. We're amazed of what you’ve achieved so far, thank you very much guys!

Step by step, we will include more and more features, assets, and interesting new elements to enhance your awesome designs. Some things we are working on are the modding of game rules (all the game stats and parameters), new interactive assets, and more ornament assets to decorate your levels.

Also we are going to allow users to create campaign-like series of levels where the player must play them in order, so they need to finish the first one to unlock the second, and go on. That will be very useful to those great series you are creating so you can make sure the player is following the levels and the narrative in the order decided by the designer. We are also considering to incorporate some kind of persistent state through the series that can be used to create things like branched stories.

The Campaign

This is the big challenge for this year! We know you have lots of questions about it, let us answer some of the most common ones.

What happens with the Campaign, Why it is so delayed?

First, let me say that we really understand your impatience. The launch of the Campaign has been delayed from our first estimations, so we fully understand you can be a bit disappointed. But, be aware that all this extra time means that we are developing a much more ambitious Campaign than we originally planned. Given the success of TAB, we feel the responsibility to develop the best possible game. We've just got one chance to release the full finished game, and we would honestly prefer to be known as the ‘slow developers’ that have released a great RTS, than the ‘rushed developers’ with an average game.

Think that the Campaign is going to be like a new full game with 40-50 hours of content! We have literally created hundreds of new graphics for the Campaign. Indeed, the investment in the Campaign has been much larger than for all the Survival Mode.

When can we test and play the Campaign?

We’ve decided not to partially release the campaign under Early Access, but release it fully at the same time that we officially launch the game out of Early Access. We will perform all the testing internally here with our team of testers and, of course, we will keep on updating you about the campaign details here. We believe is better not to release the campaign "in pieces" as it would delay the development, and it would spoil everything. We want to surprise you with the full Campaign :)

Will the Survival Mode be expanded?

Yes. The current Survival Mode will receive two new map themes very soon. One will be the easiest one, and will be the first to be played, and the other that will become the hardest one to play, even more than the Desolated Wasteland. These will the biggest expansions to the Survival Mode until the Campaign is finished. We will give you more details about them in the next update.

Will there be more units in the game?

Definitely yes. We have already several new infected ready and, right now, we are working on the Empire Heroes. All of them are been reserved for the Campaign. There will also be new upgrades that players can research in the Campaign, like the Laser Titan. Once the Campaign is released we are thinking about adding new game modes and integrating some elements of the Campaign to the Survival. That’s the future we are working on!

And here some more images from the Campaign, hope you like them:

Next update we will talk about the Research System in the Campaign. See you soon!
174 comments Read more

November 29, 2018

Workshop & Editor Available Now!


After two weeks of testing the level editor and the workshop, we are glad to announce that it’s finally ready. Thank you very much to all the players that joined the editor testing group and shared their feedback with the developers. Right now there are more than 80 levels to enjoy, and we’re sure there are many more to come soon.

The editor and custom levels access is now available with the new version of They Are Billions: V.0.10

Playing Custom Levels

It’s very easy and straightforward. Just start the game and press New Game. There are now more options to play: Survival, Community Challenge and Custom Levels.

Select the Custom Levels option to access the Levels Dashboard. You will find there the list of all the levels you are subscribed to. Just select the one you wish to play (in some of them you can configure the map type) and good luck! :)

How to Get New Levels

In the custom levels dashboard there is a link to the They Are Billions workshop. Select the levels you like and press the Subscribe button.

You can do it directly from the workshop steam page here:

Press the update button in the dashboard for a refreshed list of levels including the new subscribed ones.

Every workshop item has its own steam page, go there to give feedback or any other info to the level creator.

New Level from Numantian: The 50 Days Challenge!

One of the features of the level editor is that you can make the game generate a random Survival map and then modify the events, scripting and narrative to bring a new survival experience to the player.

We have created "The 50 Days Challenge" which is a survival game with just 50 days to build your colony before the Final Swarm arrives. But don’t despair, you will not be alone in this task. The neighboring colonies and the New Empire will try to keep you from joining the hordes of infected by sending help periodically.

Hope you like it! It’s a super fast game and a real challenge!.

The Custom Levels Editor

There are three ways to launch the Editor:
- From the game main menu, go to More => Launch Editor
- Or just press and hold the SHIFT key when starting the game and the editor will be launched automatically.

- In the installation folder you have a LaunchEditor.bat you can use to launch it directly.

These are the main features of the level editor:
  • Map creation can be manually crafted or let the game generates a random survival map when the game starts.
  • Custom events.
  • Custom scripts to enhance the narrative.
  • Advanced ZXCode language (variables and functions) to create complex gameplay mechanisms.
  • Multi-language support.

Of course, it will be updated periodically to include more features to create. One of the upcoming big features will be custom modding of game rules (units, structures, stats...).

The Level Editors Guide
Before playing with the editor we strongly recommend you read this short guide we have prepared. Here it is:
TAB Editor Guide

Forum & Support for the Editor & Workshop

Please, use this forum for all related info about the editor and workshop, comments, feedback, new features or bugs reporting. Also we will update there the development progress and version changes log.
They Are Billions Workshop Forum

The Campaign

Now it the editor is ready we think it can expand a lot the content of They Are Billions so we can focus on finishing the campaign mode. We know all of you are asking us for the estimated launch date but we cannot give an answer yet. We would like and we will try with all our workforce to release the campaign on next Spring 2019. At the same time we will improve the Survival Mode with two new Map Themes and expanding the features of the editor to allow you to create even more awesome levels.

And that's all! We hope the editor will bring lots of fun and surprises for the great community of They Are Billions players.

See you soon!
107 comments Read more
See all discussions

Report bugs and leave feedback for this game on the discussion boards

About This Game

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.

Survival Mode - Available Now!

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 a specific period of time 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!

Future Game Mode - Campaign

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. We are working right now on the campaign and we expect it will be available for Winter 2018. The campaign will be included for free to all the buyers of the Steam Early Access version.

System Requirements

    • OS: Windows 7, 8, 10 (32 and 64 bits)
    • Processor: INTEL, AMD 2 cores CPU at 2Ghz
    • Memory: 4 GB RAM
    • Graphics: Intel HD3000, Radeon, Nvidia card with shader model 3, 1GB video ram.
    • DirectX: Version 9.0c
    • Storage: 4 GB available space
    • Additional Notes: Minimum resolution: 1360x768, recomended FULL HD 1920x1080.
    • OS: Windows 7, 8, 10 (64 bits)
    • Processor: INTEL. AMD 4 cores CPU at 3Ghz
    • Memory: 8 GB RAM
    • Graphics: Radeon 7950 or above, Nvidia GTX 670 or above. 4GB video ram.
    • DirectX: Version 9.0c
    • Storage: 4 GB available space
    • Additional Notes: 4K Monitor (3840x2160)

What Curators Say

167 Curators have reviewed this product. Click here to see them.

Customer reviews

High Volume of Reviews Detected:
Exclude  or  View Only
Review Type

Purchase Type


Date Range
To view reviews within a date range, please click and drag a selection on a graph above or click on a specific bar.

Show graph

Display As:
Review Beta NEW!
When enabled, will sort reviews by new Helpfulness score. Read more about it in the blog post.
Show graph
Hide graph
Review Helpfulness Beta Enabled
There are no more reviews that match the filters set above
Adjust the filters above to see other reviews
Loading reviews...