Sigma Theory immerses players in a riveting RPG strategy game set against the backdrop of a futuristic cold war that unfolds on a global scale. As the narrative reveals, humanity stands on the brink of a groundbreaking discovery that threatens to revolutionize technology and human existence. Various powerful factions aim to harness these advancements to assert dominance, destabilizing the global financial system and even pursuing the prospect of immortality. However, this quest for supremacy leads to an intense global conflict, resulting in widespread devastation and the loss of millions. Players take on the role of a scientist involved in this pivotal discovery, navigating a complex landscape of intrigue and competition as they strive to ensure their nation's allies claim the technological advantage first.