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 that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse?
Recent Reviews:
Very Positive (731) - 82% of the 731 user reviews in the last 30 days are positive.
All Reviews:
Very Positive (7,281) - 87% of the 7,281 user reviews for this game are positive.
Release Date:
Dec 12, 2017

Sign in to add this item to your wishlist, follow it, or mark it as not interested

Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“This game has two game modes: Survival and Campaign. As the Survival mode is already fully playable, we think it is a great idea to let the players play it and take their feedback to improve the game while we work in the Campaign mode. All the feedback and improvements will be applied to the Campaign too.”

Approximately how long will this game be in Early Access?

“As this game can be expanded in a lot of ways, we will keep it as Early Access as long as needed. With that said, we expect to finish the Campaign mode in Spring of 2018.”

How is the full version planned to differ from the Early Access version?

“The Early Access game will start by including the Survival Mode. In several months, we will include the Campaign mode, the story mode, with hand-crafted levels, crazy NPCs, and lots of other fun features! The final release will include both the Survival and Campaign mode.”

What is the current state of the Early Access version?

“The Early Access game now contains the Survival Mode. In this mode, a random world is generated and the player must create a colony that can survive in an apocalyptic world for a set period of time.”

Will the game be priced differently during and after Early Access?

“Early Access will be cheaper than the final release. However, we have not finalized the price for the final release.”

How are you planning on involving the Community in your development process?

“We plan to be extremely involved with the community. We love community feedback! We already did this with our last game Lords of Xulima.”
Read more

Buy They Are Billions


Recent updates View all (14)

March 1

Development Update: The Incoming Wonders

This is a quick update to talk a bit more about the development and incoming features for They Are Billions. It has been a long time since our last update because we have been working in parallel on different parts of the game, not only for the Campaign but also for the Survival Mode.

The Six Wonders

Six new buildings are coming... and they are the greatest ones! They are extremely expensive to research and build. Not many colonies will have the capacity to even build just one of them. After all, we are surviving in a zombie apocalypse so there is no place for such luxurious and opulent wonders... BUT, if your colony has plenty of resources or you want to take the risk to build one of them, they can grant you very special rewards. Your colony will be the envy of all. :)

One of them, the cheapest one, will be the Inn/Tavern we mentioned in old updates. Finally we had to change its function as it was conflicting with other elements of the Campaign.

In the next update, we will show you all the Wonders and explain the special rewards. A quick look ahead on the Six Wonders, all of them will give you extra victory points if you win the game. The extra points will be very useful for the veteran players that try to get the highest score possible for the Survival or Community Challenge.

The Soundtrack Scored by the Bratislava Philharmonic Orchestra

Our composer, Nicolas Diteriks, is about to record the soundtrack of They Are Billions with the 60 musicians of the Bratislava Philharmonic Orchestra. This is going to be epic! In the next update, we will show you some videos. Stay tuned!

How is the final score computed?

Many people have asked us how the final game score is computed. This method could change in the future, especially with the new Wonders coming.

Right now, we use this formula:

- If the game is won the score is:
Score = 10,000 + Max(0, 5000 - 10 * Colonist Infected) + Max(0, 5000 -10 * Soldiers Died)

- If the game is lost then:
Score = 1.000 * (Number of Days Survived / Total Days to Win)

- Extra points for colonists:
Score += Max. Colony Population / 2

- Extra points for infected killed:
Score += Max. Infected Killed / 10

And then the final score is multiplied by the score factor.

For the Community Challenge, the score factor can be 100%, 115%, 135% or 155% depending on the map type.

The Campaign Development

There is much to do in the Campaign. We know the expectations are very high, so we want to create something really special. We are producing lots of new assets and implementing many more features.

As many of you already know, in the Campaign you will have to reconquest a huge territory from the infected under the orders of the New Empire. We want the campaign to be non-linear, so the player can decide if he or she prefers to explore an old human base in search of new technology or attack a huge swarm of 200K infected that is blocking a new territory to build a colony with their imperial army... Together with how the player progresses in the science and engineering tree, relation with the new empire, map reconquest strategy, and selection of objectives will make each campaign unique.

We want to add a lot of optional content so players that are stuck and cannot progress will more have more options to expand their army and advance in the technology trees.

Although this decision could change later, we would like to continue with the Ironman Mode for the missions, in the sense that you cannot reload old saves while playing a mission. Of course, if you lose you can repeat it again. Also, you can save freely when you are in the intermissions Campaign Dashboard.

And that's all for the moment, see you in the next update!
318 comments Read more

January 26

New Languages and The Community Challenge!

Greetings Survivors!
We have a lot of news to share about our most recent big update V0.6!

Nine New Languages Available!!

Now the game can be played in Chinese (Traditional and Simplified), Korean, Japanese, Russian, German, French, Polish, and Brazilian Portuguese.

The game should start selecting the language automatically. If it does not work please select the language from the Options screen.

Of course, consider the new translation in a beta state as is the game. We will check and improve everything with time. Also, you can use this forum to give us feedback or reporting issues. Each language has its own forum discussion. Our translators will check the forums and update everything as soon as possible.

Are you the best survivor? Try the Community Challenge!

Finally, it is here! Every week, starting on Monday there will be a new Community Challenge where you can play the same survival map and compete with the entire They Are Billions community. The scores will be uploaded to a leaderboard where you can compare your score with other players or friends. You have just one opportunity to try every challenge, so be careful!

Some More Features for V.0.6

Waypoints for Patrol, Travel and Attack Commands

Now you can add more waypoints to a unit’s path when using the commands Patrol, Travel, and Attack. To do so, just keep the SHIFT key pressed when selecting the target of the command. It also works for the Move command. This can be done with the right button, just keep the SHIFT key pressed to add more points.

The Old Towers

Now in the survival maps, you can find some old fortified towers that were infected and abandoned some time ago. You can reclaim these structures and have them join your colony. They can be reactivated once they are repaired.

Explosive Barrels

A new bonus you can find in some of the ruins. Explosive barrels can be carried by Soldiers, Snipers, and Lucifers and placed anywhere you’d like. If a unit shoots the barrel, it will explode causing devastating damage to the surroundings. Be careful, because they will detonate more barrels within range. They can be very useful to lessen a big swarm, or even blow up a full Doom Village!

New Dwelling Models

We have created more models for the wood and stone houses. They share the same style as the older ones but add a bit more variety and beauty to the colony.

New Swarm Music Theme

Our great composer has created a new atmospheric theme for the swarms. Hope you like it. Also, very soon we will record the entire soundtrack with the symphonic orchestra of Bratislava!

Some more minor changes:

- Improvement: Commands activated with the keyboard are more responsive (they are activated on key down, instead of on the key up event).
- Improvement: When Steam Overlay is activated the game pauses automatically and when it is closed the game continues from its last state (paused/playing).
- Improvement: When sending a unit to attack a position, now the travel indicator is displayed in the color red.
- Improvement: When attacking a specific unit with the attack command, a small red indicator will be displayed under the target unit.
- Fixed: When using the command attack key repeatedly the units cancel their current action even when attacking the same target area.
- Fixed: Steam Overlay activation could leave some phantom keys pressed.
- Fixed: Technology names in mayor description.
- Fixed: Graphics glitch with patrol path line.

F.A.Q Available in the forum

We have published here a Frequent Asked Questions post that should answer the main questions about the game. We will update the F.A.Q periodically with more information.

And that's all for now. In the next big update, we expect to add some more features like the Lost Tavern, the Monuments and Wonders and the Great Telescope (the first new addon for the Command Center). Stay tuned!

See you soon!
285 comments Read more
See all discussions

Report bugs and leave feedback for this game on the discussion boards

About This Game

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.

Survival Mode - Available Now!

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 a specific period of time 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!

Future Game Mode - Campaign

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. We are working right now on the campaign and we expect it will be available for Spring 2018. The campaign will be included for free to all the buyers of the Steam Early Access version.

System Requirements

    • OS: Windows 7, 8, 10 (32 and 64 bits)
    • Processor: INTEL, AMD 2 cores CPU at 2Ghz
    • Memory: 4 GB RAM
    • Graphics: Intel HD3000, Radeon, Nvidia card with shader model 3, 1GB video ram.
    • DirectX: Version 9.0c
    • Storage: 4 GB available space
    • Additional Notes: Minimum resolution: 1360x768, recomended FULL HD 1920x1080.
    • OS: Windows 7, 8, 10 (64 bits)
    • Processor: INTEL. AMD 4 cores CPU at 3Ghz
    • Memory: 8 GB RAM
    • Graphics: Radeon 7950 or above, Nvidia GTX 670 or above. 4GB video ram.
    • DirectX: Version 9.0c
    • Storage: 4 GB available space
    • Additional Notes: 4K Monitor (3840x2160)
Customer reviews
High Volume of Reviews Detected:
Exclude  or  View Only
Review Type

Purchase Type


Date Range
To view reviews within a date range, please click and drag a selection on a graph above or click on a specific bar.

Show graph

Display As:
Review Beta NEW!
When enabled, will sort reviews by new Helpfulness score. Read more about it in the blog post.
Show graph
Hide graph
Review Helpfulness Beta Enabled
There are no more reviews that match the filters set above
Adjust the filters above to see other reviews
Loading reviews...