Sigma Theory: Global Cold War

Sigma Theory: Global Cold War is a turn-based espionage strategy game from Plug In Digital, Goblinz Studio, and Mi-Clos Studio, released on March 19, 2019. Set in the near future, the game follows a world-changing scientific discovery called the Sigma Theory, a breakthrough that could reshape finance, warfare, nations, and even human life itself.

You lead your country’s Sigma division and compete against rival powers to control the discovery before they do. Recruit from 50 unique spies and field agents, send them on covert operations around the world, infiltrate enemy Sigma programs, and bring key scientists to your side through abduction, coercion, or seduction.

Gameplay blends strategic planning, tactical decisions, diplomacy, and subterfuge. You can deploy advanced drones, manage diplomatic summits, balance pressure from superiors and private lobbies, and decide whether to hoard, share, or sell world-changing technologies. With 30 discoveries, multiple endings, and an emergent narrative shaped by your choices, no two campaigns play the same way.

If you want to buy Sigma Theory: Global Cold War as a Steam key, this product page is focused on the essentials: best price, USDT / crypto payment, and instant delivery after purchase.