Sigma Theory: Global Cold War

Developed by Mi-Clos Studio (creators of the award-winning sci-fi game Out There), Sigma Theory: Global Cold War is a turn-based strategy game of international diplomacy and espionage, set during a futuristic global cold war. Become the chief of an intelligence agency and recruit a squad of special agents to secure control of the singularity. Provide real-time guidance to your team as you implement drones, deceive rivals and betray inconvenient allies to achieve your goals.

In the near future, a paradigm-shifting scientific discovery looms over the world, promising radical new technologies. The world’s superpowers realise 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 dynamic gameplay in Sigma Theory: Global Cold War incorporates interactions with characters through branching dialogs, in which you’ll experience an emergent narrative. In these moments every decision matters, and the complex web of character relationships means that no two games will ever be the same. The game also includes multiple distinct endings that directly respond to the player’s ethical and practical decisions.


  • 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 behaviour 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 neutralised.
  • 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 of 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 favour. 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, destabilisation of the world economy, robot soldiers, immortality… Will you keep these discoveries for yourself or share them with the world?

Sigma Theory: Global Cold War is available for PC, Mac and Linux via Steam (where it’s on sale at a 10% discount until November 29th), GOG and Humble (where it’s also on sale at 10% off). You can also purchase a digital copy directly from the Sigma Theory website, where you can learn more about the game.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top