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!

  • View media
  • View media
  • View media
  • View media
  • View media
  • View media
Post article RSS Articles

Finally, we have activated the supporting web for all those who wish to back the development of They Are Billions. We have prepared six special reward tiers that will be available until the game is finished.

All the contributions will be 100% dedicated to improving the game quality, adding languages, units, zombies, buildings, expanding the game goals and modes and much more!

The Six Editions
Each edition has the name of one of the six main units of the game: Ranger, Soldier, Sniper, Lucifer, Thanatos, and Titan. All of them include a Steam Key to play They Are Billions and four cool 4K wallpapers.

Apart from that, take a look at the extra rewards:

- Soldier Edition: Your name in the Bronze Credits section of the game. The Artbook and Soundtrack. And all future DLC!
- Sniper Edition: Soldier rewards and Silver Credits mention. Your name and custom quote in the game loading screen. It will appear randomly, so write something cool and unique for to all the players to see!
- Lucifer Edition: Be a colony Mayor! Design a Mayor with your name, slogan and custom features. All the colonies have to choose their Mayor. Will you be their preferred one?
- Thanatos Edition: Convert yourself as a Steampunk Soldier, Victorian Colonist or Zombie! Our artist will draw your preferred character with you as a model for an amazing portrait.
- Titan Edition: Same as the Thanatos Edition but with a full body drawing!!! Could you be something more awesome? Just look at the current drawing of the units and imagine yourself as one of them! All with a high-quality drawing printable in big poster format!

So here, at the Numantian Games website, you get the pre-order. The payments are managed by the Humble Store. You will receive the Steam Key and wallpapers by email immediately. For the other rewards you will receive additional instructions.

The Beta Program
First let us remind you the game schedule:
- Fall 2017: Preview beta access to the Survival mode from our website.
- Spring 2018: Steam Early Access with both improved Survival mode and Campaign.
- Sometime later in 2018: Steam Full Launch.

First step done! The beta access to the Survival Mode is finally here. The Survival Mode is a whole game in itself. It is highly addictive, fast to play, hardcore, and extremely fun - even when losing!

But remember that it is just a beta, and even after hundreds of hours of testing, it can still have unknown bugs, glitches, balancing issues, and lots of things that will be improved on with time. And of course, the game will be expanded with every update.

Surely there will be problems in specific PC configurations, like weird resolutions, multi-monitor setups, GPU drivers... It is just normal and part of the beta/testing phase. We will work hard to solve every problem with you, but please be patient, especially in the beginning as we could get overwhelmed with a lot of feedback.

Gameplay Video!

From Numantian Games we would like to give you a BIG THANKS for all of your support. We really hope you enjoy the game. We are eager to listen to your thoughts and feedback!

We have created a new subforum branch for the game owners. There you can post all topics related to the beta. Please share your scores with us! We are sure you will surpass the developers very soon! :)

To pre-order They Are Billions, visit our website. You will receive a Steam key through the Humble Store once Early Access is released.

They Are Billions Update: Ready for the Survival?

They Are Billions Update: Ready for the Survival?


Upcoming zombie RTS game They Are Billions will have two main modes: Campaign and Survival Mode. Our latest update discusses development schedule, survival...

They Are Billions Update: Build Your Colony

They Are Billions Update: Build Your Colony

News 1 comment

Today we are going to talk about building and managing the colony. Managing the colony is one of the most important aspects of They Are Billions. What...

They Are Billions Update: Defend your colony!

They Are Billions Update: Defend your colony!

News 2 comments

Today, we will talk about one of the most important parts of the game which is defending your colony from the infection. We are sure every player will...

They Are Billions: Teaser Trailer and The Villages of Doom

They Are Billions: Teaser Trailer and The Villages of Doom


In our latest update for our real-time strategy game They Are Billions, we show off a mini teaser trailer "Where's God". We also discuss the connected...


awesome! :DDDDD, wil be free2play?

Reply Good karma Bad karma+1 vote

This comment is currently awaiting admin approval, join now to view.


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)

Reply Good karma Bad karma+1 vote

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

Reply Good karma Bad karma+1 vote

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

Reply Good karma Bad karma+1 vote

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
Post a comment
Sign in or join with:

Only registered members can share their thoughts. So come on! Join the community today (totally free - or sign in with your social account on the right) and join in the conversation.

Follow Report Profile
They Are Billions
Developer & Publisher
Numantian Games
Send Message
Release date
Game watch
Single Player

Latest tweets from @numantiangames

If you missed out on the limited beta, we aim to release "They Are Billions" in the next few weeks to Steam Early A…

Nov 20 2017

RT @SplattrCatGames: They Are Billions Gameplay - Zombie Defense Post Apocalyptic City Building: via @YouTube

Nov 16 2017

RT @Christopher_Odd: More They Are Billions from @NumantianGames today at 3:00 PM EST.

Nov 13 2017

An awesome playlist of gameplay videos by @HudBudd_Gaming of "They Are Billions!"

Nov 8 2017

RT @YKYMisterFalcon: Get HYPED for #TheyAreBillions from @NumantianGames

Nov 7 2017

Great beta gameplay video of "They Are Billions" by Jordan Choklad. #gamedev #indiedev #zombies

Nov 2 2017

They Are Billions Gameplay Let's Play (Beta Video) - via @YouTube #gaming #zombies #gamedev

Nov 1 2017

Embed Buttons
Link to They Are Billions by selecting a button and using the embed code provided more...
They Are Billions
Last Update
61 members
You may also like
Formata Real Time Strategy
Star Trek: Defence Line
Star Trek: Defence Line Real Time Strategy
K.A.T : Kwarn Armada Tactics
K.A.T : Kwarn Armada Tactics Real Time Strategy
Interstellaria Real Time Strategy
OreSome Real Time Strategy
Stellaris Real Time Strategy