Single-player games like Sigma Theory: Global Cold War
Below are 18 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
Just Power: The Papal States
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
Are you ready to found a dynasty which controls the Holy See over the centuries? Climb the hierarchies, hire your relatives, blackmail and bribe to get everything you want in this turn-based political simulator.
- 3
Imperator: Rome
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
Dominate the classical Mediterranean in Imperator: Rome, a grand strategy game from Paradox Interactive. Navigate the dangerous waters of politics and diplomacy as you build up your provinces and conquer foreign lands. Now available with special content and the digital artbook.
- 4
Crisis Cabinet
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
Lead a nation through elections, unrest, war, scandals and economic collapse in this turn-based political strategy simulation. Spend political capital, manage budgets, survive crises and decide how far you’ll go to stay in power.
- 5
The Shadow Government Simulator
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 turn-based strategy game where you lead a secret society towards world domination. Investigate the influential and convert them to your faction via bribery, seduction and intimidation. Reshape society's power structures to fend off rival societies and the world's nations in your quest for power.
- 6
The Political Machine
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy with Sigma Theory: Global Cold War.
Do you have what it takes to be president?Play as more than 20 candidates including Barack Obama, Mitt Romney, Rick Santorum, Ron Paul, Newt Gingrich or create your own candidate from scratch.Players take to the campaign trail against a computer controlled opponent or a human challenger over the Internet.
- 7
Secret Government
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy and Simulation with Sigma Theory: Global Cold War.
Global strategy game about secret societies. You’ll lead the Brotherhood - an organization that juggles the whole world. The key feature of the game is the manipulation of powers. Instead of giving direct orders, the Brotherhood provokes countries into doing what the Brothers want.
- 8
Age of History II
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required. Shares Strategy with Sigma Theory: Global Cold War.
Age of History II is a grand strategy wargame that is simple to learn yet hard to master.Your objective is to use military tactics and cunning diplomacy to either unify the world, or conquer it.Will the world bleed out or bow before you? The choice is yours..
- 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
The Bureau: XCOM Declassified
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required.
The year is 1962 and the Cold War has the nation gripped by fear. A top-secret government unit called The Bureau begins investigating a series of mysterious attacks by an enemy more powerful than communism.
- 11
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.
- 12
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.
- 13
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.
- 14
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.
- 15
Pandemic Panic!
Single-player alternative to Sigma Theory: Global Cold War — playable solo, no multiplayer required.
We're in lockdown and you're our only hope! Grab your blaster, ready the cure and prepare to face the virus head on in this frantic, wacky and wild hospital. Don't be fooled, this is a task for only the best out there. Think you have what it takes?
- 16
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.
- 17
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.
- 18
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.