- 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.
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About this game
Show more Show less
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.
Campaign: The New Empire - Available now!
Lead the campaign under the orders of Quintus Crane, ruler of the New Empire, and reconquer the lands devastated by the infected.
48 missions with more than 60 hours of gameplay.
Build fortified colonies to survive in infected territories
Destroy the swarms of infected with the Imperial Army.
Make your colonies evolve with more than 90 available technologies.
Explore the ancient human fortresses with your Hero.
Discover the story behind the apocalypse... how did the pandemic start?
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 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!
System Requirements
Swipe- 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)
Player reviews
Show more Show less
Wish game still got updates. Hear there is a second game in the works on the maybe maybe if you pray hard enough for it to happen. This game was one of a kind.
I wish this game still got updates. The game can get incredibly hard, but is a ton of fun. Probably one the best games in its genre.
The dungeon crawler missions in campaign made me quit after starting the third.. i didn't know this was a part of the game and got so disappointed when being forced to play them. And don't say you don't have to.. if y...
This game is the damned tits! Steampunk tower defense with great graphics and gameplay. TAKE MY MONEY!
I feel insulted by the bunker mission. It was the most boring thing I've ever played. Who designed that? Seriously, this is the first time a mission in a game has been so unbelievably boring that I uninstalled a game ...
I played it some time ago on the default setting, and now they added campaign, the game is much more fun! Was already worth recommending before.
News
All news
6 months ago
They Are Billions now on Nintendo Switch 2<p class="bb_paragraph"><b>Hey everyone!</b></p><p class="bb_paragraph">We're thrilled to announce the release of <b>They Are Billions for Nintendo Switch 2</b>, available now as of January 22nd!</p><
5 years ago
Modding Game Rules<b>Hello everyone!</b><br><br>We have been working for a while on improving and expanding the They Are Billions level editor. The first big update, available right now in the <b>new version V1.1</b>, allows to modify the rules of the
6 years ago
Happy Holidays!There is always time for a celebration amongst friends, even for those who keep us safe from the zombie apocalypse. Who would have thought that cooking was one of the Sniper's skills!<br><b>Happy Holidays and happy New Year from Numantian Games to all the Th
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They Are Billions - PC (Steam)
About
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.Campaign: The...
- Platform
- Steam (PC)
- Developer
- Numantian Games
- Publisher
- Numantian Games
- Release date
- 18 Jun, 2019
- Languages
- Genres
- Strategy
- Product type
- Digital key / activates on Steam
Supported languages
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| ✓ | — | ✓ | |
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| ✓ | — | ✓ |
Media



Description
Campaign: The New Empire - Available now!

Lead the campaign under the orders of Quintus Crane, ruler of the New Empire, and reconquer the lands devastated by the infected.
- 48 missions with more than 60 hours of gameplay.
- Build fortified colonies to survive in infected territories
- Destroy the swarms of infected with the Imperial Army.
- Make your colonies evolve with more than 90 available technologies.
- Explore the ancient human fortresses with your Hero.
- Discover the story behind the apocalypse... how did the pandemic start?
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 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!
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)
News

6 months ago
They Are Billions now on Nintendo Switch 2
<p class="bb_paragraph"><b>Hey everyone!</b></p><p class="bb_paragraph">We're thrilled to announce the release of <b>They Are Billions for Nintendo Switch 2</b>, available now as of January 22nd!</p><

5 years ago
Modding Game Rules
<b>Hello everyone!</b><br><br>We have been working for a while on improving and expanding the They Are Billions level editor. The first big update, available right now in the <b>new version V1.1</b>, allows to modify the rules of the

6 years ago
Happy Holidays!
There is always time for a celebration amongst friends, even for those who keep us safe from the zombie apocalypse. Who would have thought that cooking was one of the Sniper's skills!<br><b>Happy Holidays and happy New Year from Numantian Games to all the Th
Best Reviews
👍 Recommended · Steam player · 29 Jun 2026
Wish game still got updates. Hear there is a second game in the works on the maybe maybe if you pray hard enough for it to happen. This game was one of a kind.
16 found this helpful
👎 Not Recommended · Steam player · 3 Jul 2026
The dungeon crawler missions in campaign made me quit after starting the third.. i didn't know this was a part of the game and got so disappointed when being forced to play them. And don't say you don't have to.. if you want decent points to be able to fight the other missions, then you do.. the dungeons missions are the definition of tedious. It's a shame that i played more than 2 hours, now i can't refund.
21 found this helpful
👍 Recommended · Steam player · 29 Jun 2026
This game is the damned tits! Steampunk tower defense with great graphics and gameplay. TAKE MY MONEY!
7 found this helpful
Recent Reviews
👍 Recommended · Steam player · 29 Jul 2026
I wish this game still got updates. The game can get incredibly hard, but is a ton of fun. Probably one the best games in its genre.
0 found this helpful
👎 Not Recommended · Steam player · 28 Jul 2026
I feel insulted by the bunker mission. It was the most boring thing I've ever played. Who designed that? Seriously, this is the first time a mission in a game has been so unbelievably boring that I uninstalled a game that was otherwise pretty good.
0 found this helpful
👍 Recommended · Steam player · 28 Jul 2026
I played it some time ago on the default setting, and now they added campaign, the game is much more fun! Was already worth recommending before.
0 found this helpful



