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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It has been an old dream of ours here at Numantian to have the opportunity to record the soundtrack of TAB with a philharmonic orchestra. Our composer, Nicolas Diteriks, did a tremendous job collaborating with Johannes Vogel, who conducts the Bratislava Symphony Orchestra. His orchestra has a great deal of experience recording music for videogames (Castlevania, Batman Arkham Origins, Assasin’s Creed III, Lords of the Fallen). It was an amazing experience and we’re thrilled with the final result. We hope the final results will make the playing experience of They Are Billions even more intense and engaging.

For a sneak peak of the recording session follow this link:

New Special Building: The Inn

Build an Inn for your colony to attract workers and mercenaries from the surroundings. Inns are very big and expensive buildings, but they have certain special features that can significantly help you in developing a successful colony. You’re only able to construct one Inn per colony, and you have to research it first in the Wood Workshop.

These are the goodies!

Happier Colonists
The colonists surrounding the Inn will get increasingly happier as they visiting the first-floor tavern causing them to spend more money there that will fill the colony reserves.

Workers for the Colony
You can expect lots of travelers visiting your colony to enjoy the Inn’s hospitality. Be sure you have enough food for your guests and also keep the fireplace stoked with enough wood to keep the rooms warm and cozy.

There are a lot of lonely heroes roaming these dangerous and desolated lands. They aren’t ones to linger, but they love to stop for a rest and to enjoy a good beer. They can be hired by a fair price. Build as many colonist houses near the Inn as you can to keep a steady stream of animated colonists and to attract more and better mercenaries.

More news about the development: The Incoming Wonders
They’re taking more time than expected, but they are looking terrific! They’ll be the biggest and most awesome buildings we have created. We expect to have them finished for the next update, but for now, let’s give you the names of the Six Wonders:

- The Beholder
- The Lightning Spire
- The Transmutator
- The Victorious
- The Academy of Immortals
- The Crystal Palace

More news: 150+ new mayors on the works!

It’s true, we haven’t gone mad, more than new 150 mayors are coming!!

As some you surely remember we launched a supporting campaign ( for They Are Billions some time before the official release. We offered special rewards for the fans who wanted to back the game. We’re happy to announce the three highest rewards: the Lucifer, Thanatos and Titan ones, included the creation of a custom mayor inspired in those backers who purchased it.

It’s a massive job! We have to contact the backers, draw a portrait and design their mayor, which requires a lot of feedback, changes, balancing, testing and translating all the slogans into eleven languages. So it is taking some time. We plan to release the mayors in stages, adding a pack of them with every new version.

We’ve already created 30, and they’re all looking awesome. They’re going to add a lot of variety to the game. For example, there’s a new one that pays you a gold coin for every zombie killed :)

New Version 0.7: Changes Log
- New Special Building: The Inn
- New Game Option: Show all alerts. It display all the alert events even when the action is happening inside the camera view are.
- All music themes scored by the Bratislava Philharmonic Orchestra.
- Buildings whose production is paused now displays an icon on the map.
- Some balancing tweaks: Foundry and Engineering Center now costs 3000 gold.

And that's all for the moment...

We expect that we’ll publish the Six Wonders in the next update, but perhaps we will release a prior update with some of the new mayors. . . stay tuned!

 “They Are Billions Update: New Languages and The Community Challenge”

“They Are Billions Update: New Languages and The Community Challenge”

News 1 comment

They Are Billions Community Challenge is live. In addition, the game can be played in Chinese (Traditional and Simplified), Korean, Japanese, Russian...

They Are Billions - Multi-language Support: Spanish Available

They Are Billions - Multi-language Support: Spanish Available


RTS game They Are Billions is now translated into the Spanish language. More language translations to come.

They Are Billions - Survival Mode Available Now

They Are Billions - Survival Mode Available Now

News 1 comment

They Are Billions Survival Mode is available on Steam! Immerse yourself in this Steampunk Zombie strategy game. Learn more about the Survival mode & EA...

They Are Billions Coming Soon to Steam Early Access

They Are Billions Coming Soon to Steam Early Access


Real-time strategy game They Are Billions is coming soon to Steam Early Access with the addicting survival mode. Get ready to play the game everyone is...

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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

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

Apr 13 2018

We are working on implementing a new feature where players can save and share a large image of their full colony an…

Apr 9 2018

They Are Billions Update: New Soundtrack and New Special Building Available!

Mar 26 2018

RT @theyarebillions: Someone Survived They Are Billions Using The Tiniest Base #theyarebillions

Mar 25 2018

RT @theyarebillions: Here's the status page for all the They Are Billions Backer Rewards from our pre-order period in 2017. We will upd…

Mar 5 2018

Development Update: The Incoming Wonders

Mar 1 2018

"This is an epic game with 20,000 units on the screen and we needed to reflect that with the music." -…

Feb 27 2018

They Are Billions Update: New Languages and The Community Challenge #TheyAreBillions

Jan 26 2018

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

Jan 19 2018

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