Single-player games like Sigma Theory: Global Cold War
Below are 15 single-player Steam games similar to Sigma Theory: Global Cold War, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Sigma Theory: Global Cold War page.
Ranked picks
- 1
Democracy 3
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
Have you ever wanted to be president? or prime-minister? Convinced you could do a better job of running the country? Let's face it, you could hardly do a worse job than our current political leaders.
- 2
Rebel Inc: Escalation
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
A unique and deeply engaging political/military strategic simulation from the creator of Plague Inc. Balance competing civilian and military priorities and deal with a deadly insurgency in order to stabilise a war-torn country.
- 3
Orwell: Keeping an Eye On You
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Simulation with Sigma Theory: Global Cold War.
Big Brother has arrived - and it’s you. Investigate the lives of citizens to find those responsible for a series of terror attacks. Information from the internet, personal communications and private files are all accessible to you. But, be warned, the information you supply will have consequences.
- 4
Old World
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
Old World is a revolutionary new historical strategy game where you lead your dynasty over generations of rule against rival kings and queens. Wage massive wars, manage your court, and build a dynasty — or watch your empire crumble to dust. What legacy will you leave behind?
- 5
Realpolitiks
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy with Sigma Theory: Global Cold War.
Become the leader of any contemporary country in this streamlined real-time grand strategy game. Use diplomacy, espionage, military and economic power to deal with other nations, while tackling issues such as terrorism, financial crises and medical epidemics, all in an effort to achieve global domination!
- 6
Fate of the World
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
Fate of the World is a dramatic global strategy game that puts all our futures in your hands. The game features a dramatic set of scenarios based on the latest science covering the next two centuries. You must manage a balancing act of protecting the Earth’s resources and climate versus the needs of an ever-growing world population, who...
- 7
Victoria II
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy with Sigma Theory: Global Cold War.
Carefully guide your nation from the era of absolute monarchies in the early 19th century, through expansion and colonization, to finally become a truly great power by the dawn of the 20th century. Victoria II is a grand strategy game played during the colonial era of the 19th century, where the player takes control of a country, guiding...
- 8
Crisis in the Kremlin: The Cold War
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
Crisis in the Kremlin is a global real-time political strategy about the Socialist world in its final decade. Shape the fate of the world as you manage economy, foreign relations, and domestic policy. Engage with countries across the globe, using diplomacy or even proxy wars to expand your reach.
- 9
Plague Inc: Evolved
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
Plague Inc: Evolved is a unique mix of high strategy and terrifyingly realistic simulation. Your pathogen has just infected 'Patient Zero' - now you must bring about the end of human history by evolving a deadly, global Plague whilst adapting against everything humanity can do to defend itself.
- 10
Medieval: Total War™ - Collection
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy with Sigma Theory: Global Cold War.
MEDIEVAL: Total War™ - Collection Edition is the compilation of the critically-acclaimed Medieval: Total War and its official expansion pack - Viking Invasion.
- 11
Pandemic: The Board Game
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
Humanity is on the brink of extinction. As members of an elite disease control team, you’re the only thing standing in the way of the four deadly diseases spreading across the world.
- 12
Total War: MEDIEVAL II – Definitive Edition
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy with Sigma Theory: Global Cold War.
Spanning the most turbulent era in Western history, your quest for territory and power takes you through Europe, Africa, the Middle East, and even onto the shores of the New World.
- 13
Out There: Ω Edition
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy with Sigma Theory: Global Cold War.
Out There is an award-winning space exploration game blending roguelike, resource management and interactive fiction.
- 14
Out There: Oceans of Time
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy with Sigma Theory: Global Cold War.
Out There: Oceans of Time is a space exploration game that puts you at the helm of an interstellar mission of discovery spanning a vast and vibrant cosmos.
- 15
Eugenics
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required.
In this satirical game, you play the sorcerer's apprentice of genetics. Decipher the genome, create your brave new world, for better or for worse.