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Sigma Theory: Global Cold War - PC (Steam)

PC (Steam) · Digital key

Platform Steam
Region Global
Delivery Instant key

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Standard / GLOBAL $4.39

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About this game

71% Mostly Positive638 Steam reviews
Platform
Steam (PC)
Developer
Mi-Clos Studio, Goblinz Studio, FibreTigre
Publisher
Goblinz Publishing, Fractale
Release date
21 Nov 2019
Languages
4 languages
Genres
Simulation, Strategy
Product type
Digital key / activates on Steam

Tags

  • Political Sim
  • Turn-Based
  • Management
  • Turn-Based Strategy
  • Grand Strategy
  • Sandbox
  • Strategy
  • Economy
  • 3D
  • War
Show more Show less

STORY

From the creators of the award-winning sci-fi game Out There...

In the near future, a paradigm-shifting scientific discovery looms over the world, promising radical new technologies. The world’s superpowers realize they could have the power to destroy the global financial system, wipe out entire countries or even gain access to immortality.

However, this discovery — called “The Sigma Theory” — can only be harnessed by a handful of scientists. You are placed at the head of your country’s Sigma division. Your objective is to ensure that it is your nation that reaps the benefits of Sigma Theory before anyone else.

To achieve this you will have powerful resources at your disposal: a cadre of the world’s most elite covert agents, advanced tactical drones and, of course, your own skills in diplomacy and subterfuge.

It’s a cold war out there, one in which mankind must face up to its future.

THE ULTIMATE ESPIONAGE SIMULATION

Turn-based espionage: Use your special agents to dominate the world. Seduction, blackmail, manipulation, industrial espionage… Every low blow is both permitted and encouraged.

Dynamic narrative: Develop and manage your relations with over 100 NPCs: lobbies, armed groups, politicians… Alliance, deception or assassination, you choose.

Field operations: Direct the kidnapping of your targets during gripping pursuits through the world’s greatest cities. Discretion or direct confrontation, your agent’s life is in your hands.

Recruitment

First, recruit a team of four special agents from 50 unique unlockable characters to support your missions. Each comes with their own story, motivations and traits that define their behavior during missions.

Access the investigator, soldier, hacker, seducer and other archetypes to complete your Sigma division and execute your strategy.

Espionage

When your team is ready, assign them missions around the world to gather scientists, discover compromising documents on local politicians, and more.

Exploit your agents’ abilities to seduce, manipulate and bribe your targets over to your side or have them neutralized.

Counter-espionage

Other nations will also use their agents to infiltrate your country and seize your scientists. Track, capture and interrogate them to gain information on your enemies, then exchange them for ransom when they are no longer useful.

Exfiltration

Order your agents to exfiltrate scientists recruited to your cause during gripping turn-based exfiltration phases through the world’s greatest capitals. Choose the position your drones wisely to support these delicate missions.

Diplomacy

In Sigma Theory, diplomacy is the key to achieving your goals. Meet your foreign counterparts and further your objectives using flattery, threats or blackmail. You can also recover your captured agents, advance your research, and much more. Develop your relations with powerful lobbies and armed and influential groups to obtain their favor. But be careful, they may turn on you.

Tech Tree

Sigma Theory is the cause of this cold war. Rally scientists from around the world to your cause to discover new technologies to gain the edge and change the world. Mind control, destabilization of the world economy, robot soldiers, immortality… Will you keep these discoveries for yourself or share them with the world?

Games that inspired us:

XCom, Phantom Doctrine, Plague Inc, Pandemic (board game), Rocket Ranger, Tropico, Armello, Civilization, curious expedition and so much more

Game features

  • Single-player
  • Steam Achievements
  • Steam Workshop
  • Steam Cloud
  • Family Sharing
  • Steam Leaderboards

System Requirements

Swipe
Minimum
  • OS: Windows Vista
  • Processor: 1,3 GHz CPU
  • Memory: 1 GB RAM
  • Graphics: NVIDIA GT 440 or AMD Radeon HD 5550 w/ 512 MB
  • Storage: 1 GB available space
Recommended
  • OS: Microsoft® Windows® 7
  • Processor: Dual-core 2Ghz CPU
  • Memory: 2 GB RAM
  • Graphics: DirectX® 10 compliant graphics card
  • Storage: 1 GB available space

Player reviews

Recommended· 25 May 2026

This is a very niche genre with most games being a disappointment. This game is okay. I would recommend it to try if you want a spy/diplomatic strategy game. My main complaint is that not all things seem balance is...

Not Recommended· 6 May 2026

Great concept, but poor execution. It's frustrating and there really isn't too much emergent gameplay here. I really wanted to enjoy it.

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Sigma Theory: Global Cold War - PC (Steam)
Sigma Theory: Global Cold War - PC (Steam)

Sigma Theory: Global Cold War - PC (Steam)

Standard / GLOBAL
$4.39
Sale price  $4.39 Regular price  $13.39
Skip to product information
Sigma Theory: Global Cold War - PC (Steam)
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Sigma Theory: Global Cold War - PC (Steam)

$4.39
Sale price  $4.39 Regular price  $13.39
EditionStandard
RegionGLOBAL

About

STORYFrom the creators of the award-winning sci-fi game Out There...In the near future, a paradigm-shifting scientific discovery looms over the world, promising radical new technologies. The world’s superpowers realize they could have the power to destroy the global financial system, wipe out entire countries or even gain access to immortality. However, this discovery — called “The Sigma Theory” — can only be harnessed by a...

Platform
Steam (PC)
Developer
Mi-Clos Studio, Goblinz Studio, FibreTigre
Publisher
Goblinz Publishing, Fractale
Release date
21 Nov, 2019
Languages
Genres
Simulation, Strategy
Product type
Digital key / activates on Steam

Media

Sigma Theory: Global Cold War - PC (Steam) — скриншот 1Sigma Theory: Global Cold War - PC (Steam) — скриншот 2Sigma Theory: Global Cold War - PC (Steam) — скриншот 3

Tags

  • Political Sim
  • Turn-Based
  • Management
  • Turn-Based Strategy
  • Grand Strategy
  • Sandbox
  • Strategy
  • Economy
  • 3D
  • War

Description

STORY

From the creators of the award-winning sci-fi game Out There...

In the near future, a paradigm-shifting scientific discovery looms over the world, promising radical new technologies. The world’s superpowers realize they could have the power to destroy the global financial system, wipe out entire countries or even gain access to immortality.

However, this discovery — called “The Sigma Theory” — can only be harnessed by a handful of scientists. You are placed at the head of your country’s Sigma division. Your objective is to ensure that it is your nation that reaps the benefits of Sigma Theory before anyone else.

To achieve this you will have powerful resources at your disposal: a cadre of the world’s most elite covert agents, advanced tactical drones and, of course, your own skills in diplomacy and subterfuge.

It’s a cold war out there, one in which mankind must face up to its future.

THE ULTIMATE ESPIONAGE SIMULATION

Turn-based espionage: Use your special agents to dominate the world. Seduction, blackmail, manipulation, industrial espionage… Every low blow is both permitted and encouraged.
Dynamic narrative: Develop and manage your relations with over 100 NPCs: lobbies, armed groups, politicians… Alliance, deception or assassination, you choose.
Field operations: Direct the kidnapping of your targets during gripping pursuits through the world’s greatest cities. Discretion or direct confrontation, your agent’s life is in your hands.


Recruitment
First, recruit a team of four special agents from 50 unique unlockable characters to support your missions. Each comes with their own story, motivations and traits that define their behavior during missions.
Access the investigator, soldier, hacker, seducer and other archetypes to complete your Sigma division and execute your strategy.


Espionage
When your team is ready, assign them missions around the world to gather scientists, discover compromising documents on local politicians, and more.
Exploit your agents’ abilities to seduce, manipulate and bribe your targets over to your side or have them neutralized.


Counter-espionage
Other nations will also use their agents to infiltrate your country and seize your scientists. Track, capture and interrogate them to gain information on your enemies, then exchange them for ransom when they are no longer useful.


Exfiltration
Order your agents to exfiltrate scientists recruited to your cause during gripping turn-based exfiltration phases through the world’s greatest capitals. Choose the position your drones wisely to support these delicate missions.


Diplomacy
In Sigma Theory, diplomacy is the key to achieving your goals. Meet your foreign counterparts and further your objectives using flattery, threats or blackmail. You can also recover your captured agents, advance your research, and much more. Develop your relations with powerful lobbies and armed and influential groups to obtain their favor. But be careful, they may turn on you.


Tech Tree
Sigma Theory is the cause of this cold war. Rally scientists from around the world to your cause to discover new technologies to gain the edge and change the world. Mind control, destabilization of the world economy, robot soldiers, immortality… Will you keep these discoveries for yourself or share them with the world?

Games that inspired us:

XCom, Phantom Doctrine, Plague Inc, Pandemic (board game), Rocket Ranger, Tropico, Armello, Civilization, curious expedition and so much more

Game features

  • Single-player
  • Steam Achievements
  • Steam Workshop
  • Steam Cloud
  • Family Sharing
  • Steam Leaderboards

System Requirements

Minimum
OS
Windows Vista
Processor
1,3 GHz CPU
Memory
1 GB RAM
Graphics
NVIDIA GT 440 or AMD Radeon HD 5550 w/ 512 MB
Storage
1 GB available space
Recommended
OS
Microsoft® Windows® 7
Processor
Dual-core 2Ghz CPU
Memory
2 GB RAM
Graphics
DirectX® 10 compliant graphics card
Storage
1 GB available space
Minimum
OS
Ubuntu 12.04+
Processor
1,3 GHz CPU
Memory
2 GB RAM
Storage
1 GB available space
Recommended
OS
Ubuntu 12.04+ Desktop only
Processor
Dual-core 2Ghz CPU
Memory
4 GB RAM
Storage
2 GB available space
Minimum
OS
Mac OS X 10.7
Processor
Dual Core 2Ghz
Memory
2 GB RAM
Graphics
Hardware Accelerated Graphics with dedicated memory
Storage
500 MB available space

Best Reviews

👍 Recommended · Steam player · 25 May 2026

This is a very niche genre with most games being a disappointment. This game is okay. I would recommend it to try if you want a spy/diplomatic strategy game. My main complaint is that not all things seem balance is what you can do. It can also feel a bit more like a puzzle than a strategy game.. I define puzzle in that there ends up being 1 clear way of solving something. Still.. i give a positive cause this genre is fun to me and they at least made something fun.

0 found this helpful

👎 Not Recommended · Steam player · 6 May 2026

Great concept, but poor execution. It's frustrating and there really isn't too much emergent gameplay here. I really wanted to enjoy it.

0 found this helpful

Recent Reviews

👍 Recommended · Steam player · 25 May 2026

This is a very niche genre with most games being a disappointment. This game is okay. I would recommend it to try if you want a spy/diplomatic strategy game. My main complaint is that not all things seem balance is what you can do. It can also feel a bit more like a puzzle than a strategy game.. I define puzzle in that there ends up being 1 clear way of solving something. Still.. i give a positive cause this genre is fun to me and they at least made something fun.

0 found this helpful

👎 Not Recommended · Steam player · 6 May 2026

Great concept, but poor execution. It's frustrating and there really isn't too much emergent gameplay here. I really wanted to enjoy it.

0 found this helpful

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