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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As you know, we are currently working on the development of the campaign of They Are Billions. As we have many (too many) interesting ideas to implement, we have a lot of work ahead of us: lots of new graphics assets, buildings, structures, environments, new features to program and much more. But don't worry, the development is progressing very well.

Let's talk a bit about the campaign
In our opinion, modern strategy games seem to belong to two big groups.

First, the ones that focus on survival, crafting, and simulation. In these games, one would play random or customized levels. Many times, they are without a specific goal so that the player can play them indefinitely. Games like Prison Architect, Civilization, Factorio... belong to this type. They Are Billions has its own survival mode that while being very addictive, is not the main goal of this game.

The other type is multiplayer RTS: competitive or cooperative. There are many games like this. They Are Billions won't have this mode - at least in the beginning. If the game turns to be very successful, we will consider implementing and include it in the game. Either way, multiplayer is our last priority right now.

Both game types are great. We enjoy both a lot, especially the first one. But it seems that all single player campaigns have almost disappeared or has been reduced to the minimal expression like a pack of single crafted levels to play in order. There are exceptions of course. And, They Are Billions will be one of them. :)

In the campaign, you will just have one goal, reconquest an infected region of the world by creating well-defended colonies connected by a train railways network. How will you achieve that? That's up to you! You can decide where to expand your territory, which missions to try, and even in where to focus your advancement. In every mission, you can choose several types of rewards:

    • Engineering Points: you can use to research new structures and units. You have more than 60 to discover. It is impossible to get all in a single campaign. Therefore, you must decide which are the best for your gameplay style.
    • Science Points: The science tree has more than 150 advances you can research to improve your units and buildings in many different ways. Again, it is impossible to research all of them. You will have to decide your own way: Are you a tactic military leader with elite units or massive armies of soldiers, or do you prefer to trust in automated machines to defend the colonies? Would you rather create big industrial colonies focusing in the resources production or getting rich to improve the relations with the empire?...
    • Empire Points: They represent your reputation in the New Empire. We will talk about this more in a later update...

We will talk in the next updates about the campaign/world elements. Today, we will talk about the Old Human Fortress.

The Old Human Fortresses

After the infection devastated the big metropolis in the 22nd century, the humans decided to create an impregnable fortress to defend the remaining cities from the infected. But even with their advanced technology, they failed, and the fortress succumbed to the infection. What happened? No one knows what happened these days... You will have to play the campaign to find out the answers. The fortresses are now abandoned with the infected roaming around them. Their big ruined and rusted structures remain as a silent witness of the failure of the old humans had to contain the infection in the past.

And... if they failed to defend their cities with their high technology and tons of resources, how are you going to survive with steam machines, wood, stone walls, and crazy mercenaries?...

During the campaign, you will find these old fortresses and be able to use them to your advantage. Their walls and structures are indestructible, so they are terrific tactical places to contain the swarms. It is also worth it to explore them, as they frequently contain resources for the colony, useful items you can use against the infected (explosive barrels, oil...), and valuable documents about science and engineering you can use to advance in the technology trees.

And that's all for now. In the next update, we will talk more about the campaign and will show you a new interesting video!

See you soon!

Visit our Steam Store page of They Are Billions and add it to your wishlist!

They Are Billions: Units Update Part 1

They Are Billions: Units Update Part 1

News 1 comment

Take a look at some of the units you will be using in our upcoming title They Are Billions.

They Are Billions - Plot, Campaign, and More!

They Are Billions - Plot, Campaign, and More!


Here is a look at the campaign, plot, zombie types, and more in our upcoming rts title, They Are Billions.

Revealing the They Are Billions GUI

Revealing the They Are Billions GUI

News 1 comment

In this article we reveal the GUI for the upcoming steampunk rts They Are Billions.

New Game: They Are Billions

New Game: They Are Billions

News 5 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...


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

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Definitely excited about this one

Reply Good karma Bad karma+3 votes

A zombie rts game, cant wait! I like that they are billions and there are far far far far less humans AND it looks steampunky to boot! Oh and did i mention ITS A ZOMBIE RTS GAME

Reply Good karma Bad karma+3 votes

Oh very interesting! Any idea on a price range?

Reply Good karma Bad karma+2 votes
NumantianGames Creator

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

Reply Good karma+2 votes
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They Are Billions
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Numantian Games
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They Are Billions Update: The OldĀ Fortresses

Aug 6 2017

Our upcoming title: They Are Billions! #gamedev #rts #steampunk

Jul 8 2017

In our latest update we discuss the plot and campaign of our upcoming strategy game They Are Billions. #gamedev #rts

Jul 1 2017

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

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