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Sigma Theory

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10K+
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Content rating
Teen
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About this game

Sigma Theory is a Turn-based Strategy game in a futuristic global cold war from the award-winning creators of Out There. Recruit a squad of special agents and run your intel agency to secure the control of the singularity.

STORY
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.
Updated on
Jan 9, 2026
Powered by Intel® technology

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Device or other IDs
Data is encrypted in transit
Data can’t be deleted

Play on PC

Play this game on your Windows PC with Google Play Games

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Minimum requirements

  • OS: Windows 10 (v2004)
  • Storage: Solid state drive (SSD) with 10 GB of available storage space
  • Graphics: IntelⓇ UHD Graphics 630 GPU or comparable
  • Processor: 4 CPU physical cores
  • Memory: 8 GB of RAM
  • Windows admin account
  • Hardware virtualization must be turned on

To learn more about these requirements, visit the Help Center

Intel is a registered trademark of Intel Corporation or its subsidiaries. Windows is a trademark of the Microsoft group of companies.

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App support

About the developer
PLUG-IN-DIGITAL
contact.google.play@plugindigital.com
8 B BOULEVARD BERTHELOT 34000 MONTPELLIER France
+33 7 44 31 11 05