Turn-based futuristic global cold war simulation 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.
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Release Date:
Apr 18, 2019

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Available: April 18

This game will unlock in approximately 8 weeks


Recent updates View all (12)

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January 10

Update 0.8.5 : 2 new agents and Dashboard

Content :
- 2 new agents: Inside Out from Turkey and Archer from South Korea.
Archer is the only agent using a combat bow.

Feature :
- The first iteration of the Dashboard centralizing all NPCs and their status

UI :
- New character creation screen
- UI improvement for agent recruitment

Gameplay :
- Max unlockable technologies increased to 5
- Added shotgun and different effects according to the firearm used during combat

Sound :
- New music tracks
- New sounds

Various changes :
- Russian scientists now have correct names according to their gender
- "Ghost" trait now works as described
- Random exfiltration events involving getting a weapon don't show up anymore for pacifist agents

Bug fixes :
- Fixed bug where it was possible to open settings menu on top of other windows
- Fixed bug where scientists could have trait linked to technologies from the start
- Added missing translations
- Fixed bug where starting a conflict in a country where agents have a mission caused unexpected behavior
- Fixed bug where meetings with terrorist organizations weren't properly saved
- Fixed bug where moles transferred diplomatically in the player's country where still displayed as moles in the original country
- Fixed various typos and missing translations
- Fixed crash at the end of the exfiltration of an agent
- Fixed crash when clicking on an organization leader in the calendar

To join the beta, you need to pre-order the game from the official website : https://sigmatheorygame.com/store
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Early Beta Access

Pre-order the game for instant BETA access and tier rewards: Official Website.

About This Game


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.


  • A bold new take on the espionage game genre, set during a future global cold war
  • Recruit your team from 50 unique spies and field agents
  • Turn-based strategical and tactical-level gameplay
  • Order your spies to conduct operations all over the world
  • Experience tense and thrilling exfiltration missions where you guide your agents on a covert operation to extract high-value targets from foreign cities
  • Infiltrate the enemy’s Sigma programs, abducting, coercing, and seducing scientists to your side
  • Deploy your drone fleet to turn operations in your favor
  • Deceive or cooperate with your rivals during diplomatic summits
  • Use your diplomatic skill to balance the demands of multiple relationships: with your agents, with your superiors, with powerful private lobbies, and with your counterparts around the world
  • Discover 30 world-changing technologies
  • Hoard Sigma Theory discoveries for yourself to gain an edge in the cold war — or share them for the benefit of all mankind — or sell them to powerful private lobbies bent on preserving the old world order
  • Experience a dynamic emergent narrative where every decision matters and the complex web of character relationships means that no two games of Sigma Theory will ever be the same
  • Multiple distinct endings that respond to the player’s ethical and practical decisions throughout the game

Games that inspired us:

XCom, Phantom Doctrine, Plague Inc, Pandemic, Rocket Ranger and so much more

System Requirements

Mac OS X
SteamOS + Linux
    • 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
    • OS: Microsoft® Windows® 7
    • Processor: Dual-core 2Ghz CPU
    • Memory: 2 GB RAM
    • Graphics: DirectX® 10 compliant graphics card
    • Storage: 1 GB available space
    • 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
    • OS: Ubuntu 12.04+
    • Processor: 1,3 GHz CPU
    • Memory: 2 GB RAM
    • Storage: 1 GB available space
    • OS: Ubuntu 12.04+ Desktop only
    • Processor: Dual-core 2Ghz CPU
    • Memory: 4 GB RAM
    • Storage: 2 GB available space

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