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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This is the first post of a series in which we will periodically talk about the development and reveal more about They Are Billions.

I am sure by now you have seen the trailer and screenshots with all of the zombie hordes. However, you may not know much about the gameplay yet, which ultimately is the most important part of a video game.

If you have played our first game Lords of Xulima, you will know that at Numantian, we love to create deep and hardcore games. We emphasize on strategy and not the player’s skills. We love to set the player in a challenging and dangerous world and allow him alone to freely explore and experiment without hand-holding, level-scaling, or any forced script programmed in to make you feel a hero. They Are Billions is no exception to this. In They Are Billions, you are alone in a lethal world devastated by billions of infected. Yes, it sounds like a nightmare, but what you do there, your achievements, and your success will only depend on you.

In some of the comments we have read, some people compare They Are Billions to a Tower Defense game. The is very far from the reality. It a RTS/City Builder/Tactic game. There are 9 resources to manage, more than forty different buildings to create a successful colony, military units to create an army, and a lot of various defensive structures.

GUI Image
And now let’s talk about the game. This is the first screenshot published with the GUI.

gui image

As we have played a lot :), we have reworked the GUI several times to have the most useful one. It is similar to other RTS, so if you have played others before you will be very comfortable with this setup. There is a minimap that shows you the land explored; your colony in green and the enemies in red. Enemies only appear if they are being watched by buildings or units.

Next, there is the Pause/Play button. This feature is very important in managing your colony, allowing you to build calmly and strategically at your own pace. Also on the interface, you will notice the day and hour of the colony. 1 minute of real time is 1 day in the game. For example, in the Survival Mode, you just have to survive for 100 days. We will talk more about Survival Mode later.

Next, you will see the main area that displays the units or buildings selected with their properties, attributes, and commands available. This screen changes depending on what you have selected. All commands to build structures is done at the Command Center which is the main building of the colony. If the Command Center falls to the infection or is destroyed, it is game over.

And finally, to the right, you will see the status of the colony. This shows how much food, workers, energy, and colonists are available to be used. It also shows the storage of resources needed to build structures and units. These resources are continuously collected by the colonistswhich include: wood, stone, iron, and oil. It shows your current stock, the storage used, and the production on the right.

And that's all for today! In the next post, we will continue talking more about the gameplay.

See you soon!

New Game: They Are Billions

New Game: They Are Billions

News 3 comments

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...


Oh very interesting! Any idea on a price range?

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NumantianGames Creator

Thanks for the comment! We're not sure on a price as of yet.

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They Are Billions
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Numantian Games
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Latest tweets from @numantiangames

Here's our latest update on the They Are Billions GUI. Check it out! #indiedev #gamedev #rts

Jun 9 2017

RT @nichegamer: They Are Billions Announced - A Ridiculous, Steampunk, Zombie-Survival City-Builder

Jun 2 2017

Thank you, PC Gamer, for the article on our upcoming game, They Are Billions! #indiedev #pcgaming

Jun 1 2017

We are excited to announce the latest project we have been working on all this time, They Are Billions. #indiedev

May 31 2017

Lords of Xulima The Sequel: More casual or more hardcore?

Mar 23 2017

Torment: Tides of Numenera is almost here. Pre-order now for your free copy of Lords of Xulima on GOG. #rpg #gaming

Feb 27 2017

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