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!

Set to Release Winter 2018.

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While we are working hard developing the Campaign of They Are Billions we would like to add some more spice to the current Survival Mode:

The Infected Giant

The Infected Giant is a very special enemy with some specific features. The Giant is a mutated infected that has grown without limit for years and years. It is so huge that the earth trembles under its passage.

When does the beast appear in the game?

From the beginning... They start roaming the outer border of the map, nevertheless, the Giants are so huge that you will always know where they are as their position will be marked on the minimap with a small icon. This is a great clue so you know where you shouldn’t expand your colony or move your units, at least not until you have a very powerful army to fight them.

The Giant(s) appear on the maps with the Infected Population set at “Challenging” difficulty or above. So, new players don't worry, you won't need to face this beast during your first playthroughs.

The Tiny Brain of the Giant

Giants are huge and powerful but with a tiny brain. They cannot hear so they are not attracted by nearby activity. Also, they are almost blind, they react slowly to your actions, but be careful, once it detects a target it will chase it with terrifying speed and there are no walls in the world that can stop them!

Their Deadly Attack

The Giant has the most powerful attack in They Are Billions. They have a very long reach and they hit everything in a 120º arc. Nothing can escape their attack, even other infected can be destroyed if they are within the Giants attack range.

I'm scared... What can I do?

Nothing. We recommend you avoid the Giants and don’t annoy them under any circumstance. But you can’t avoid them all game, you should kill them before the final horde comes for your colony, because they will join them as any other infected on the map. Believe us, last thing you want is to fight the final swarm and the Giants at the same time...

Version 0.9: More Features

New Difficulty Mode: Nightmare!

Are you one of the pro-players that think TAB is a piece of cake? Congratulations and welcome to your worst nightmare!

This is a new value for the Infected Population, which increases the huge population of Brutal mode by 30%!!! And it also includes a gift of three Giants on the same map. We think it is almost impossible to beat the game on this mode but it will be great fun to try. If you can beat it in the desert, you will get a score factor of 800%!! Good luck!

Some technical info about this mode: We have optimized TAB even more in the 0.9 version, allowing the engine to move more and more units. That being said, this mode requires a good computer with many cores and a high speed. Using a lower spec computer can cause the game to suffer, dropping frames and running slowly when the big swarm heads towards the colony. However, the game will continue to be playable.

Armor System Refactored

In previous versions of TAB, the Armor value of the units are subtracted from the damage, for example, an attack of 8 against an armor of 3, deals 5 life points of damage.

Now the Armor decreases the damage as a percentage instead of an absolute value. For example, an attack of 8 against a 25% armor deals 6 life points of damage. This means that now, small damage attacks like the weak infected are not as reduced by the armor as before, but the deadlier attacks (Harpies, Chubbies, Giants....) are much more reduced. Also, with the new armour values, Soldiers and Titans are much more resistant to damage than the Rangers and Snipers, which is more realistic.

  • Ranger and Sniper: 5%
  • Soldier and Titan: 40%
  • Lucifer and Thanatos: 25%

New Map Features

You can find on the maps new elements to loot, food crates that add food to the Command Center and old batteries that provide extra energy to the colony. Also, we have added some more decorative elements.

Some more Balancing

  • Traps life increased.
  • Soldier and Titan damage increased.
  • Veteran Soldier and Veteran Ranger attack range increased.

New Achievements

Four new achievements:

  • Giant Slayer Level 1: When you kill your first Giant.
  • Giant Slayer Level 2: When you kill your two Giants on the same map.
  • Giant Slayer Level 3: When you kill your three Giants on the same map.
  • The Most Wonderful Colony: When you build all the Six Wonders in your colony.

And that's all for the moment, we hope you to enjoy this new update. In the next one we will talk and show more screenshots from the Campaign.

See you soon!

They Are Billions - Development Update v.0.8.2

They Are Billions - Development Update v.0.8.2

News 1 comment

We are working now in two fronts, the Old Fortresses and the Trains system. As we said before we want to keep on trying to enrich the content of the Survival...

They Are Billions V 0.8 Update - The Six Wonders

They Are Billions V 0.8 Update - The Six Wonders


The Six Wonders are the biggest and most amazing ones you can build for the colony. But, as mighty as they are, they’re also really expensive to build...

They Are Billions - Development Update

They Are Billions - Development Update


As you know we are working on a big update for They Are Billions (V.0.8) with The Six Wonders, that we expect to publish on the 5th of May. Here are some...

New Soundtrack and New Special Building Available!

New Soundtrack and New Special Building Available!


The latest version update for They Are Billions has included a newly orchestrated soundtrack and a new building: The Inn.

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Turkish Patch 1 comment

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Comments  (0 - 10 of 12)

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

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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)

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

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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

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They Are Billions
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Numantian Games
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Latest tweets from @numantiangames

RT @theyarebillions: Our latest update includes: a new zombie type the Infected Giant, Nightmare mode, new map features, armor system re…

Aug 6 2018

RT @theyarebillions: Development Update v.0.8.2 New army buttons and improved traps. We also talk about including trains! Read more here…

Jun 7 2018

RT @theyarebillions: They Are Billions Now Has A Ton Of Cool New Buildings #gamedev #theyarebillions

May 11 2018

They Are Billions is on sale this weekend for 25% off. Get it here on Steam!

May 5 2018

They Are Billions - The Six Wonders #gamedev #TheyAreBillions #videogames

May 4 2018

RT @theyarebillions: The latest They Are Billions Update: The Six Wonders!! #theyarebillions

May 4 2018

RT @theyarebillions: We are gearing up for Version 0.8 - expected to be released May 5th. Take a look at the list of features we are wo…

Apr 25 2018

RT @theyarebillions: The current weekly Community Challenge map is perhaps the most difficult one yet! * - 30% Energy * Two Villages of…

Apr 13 2018

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