The Sigma Theory is a single-player near-future espionage strategy game that takes place during a new cold war.
Source: N4G PC The Sigma Theory Private Beta For Pre-Orders, Delayed Until 2019
The Sigma Theory is a single-player near-future espionage strategy game that takes place during a new cold war.
Source: N4G PC The Sigma Theory Private Beta For Pre-Orders, Delayed Until 2019
