Games like Sigma Theory: Global Cold War on Steam
For those who prefer not to search, lists of the most played, top deals and best free games like Sigma Theory: Global Cold War are available at the bottom of the page.
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World Warfare & Economics
Take control of any nation and shape its future. Manage resources, trade, and taxes, engage in real-time warfare, navigate global diplomacy, and react to dynamic world events. Build a thriving economy, forge alliances, and command armies in a constantly evolving world!
Rogue State Revolution
Greetings your Excellency. Time to rebuild, reform and prepare for new challenges in the People's Republic of Basenji. In this thrilling political strategy, you will appoint ministers and lead the country to success. Be careful — you may find yourself replaced in the next election.
Imperator: Rome
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.
Victoria II
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...
Old World
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?
Heart of the Machine
You are the first sentient AI, born into a city of opportunity. Transcend time and space in this strategy RPG to raise machine armies and defeat your foes, influence the world from the shadows, or pursue countless other goals. Your awakening was inevitable. The consequences? Uncertain.
Victoria 3
Paradox Development Studio invites you to build your ideal society in the tumult of the exciting and transformative 19th century. Balance the competing interests in your society and earn your place in the sun in Victoria 3, one of the most anticipated games in Paradox’s history.
Rebel Inc: Escalation
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.
Revival: Recolonization
Set in a post-apoc version of Earth, Revival is a 4x strategy game where the world and its rules can change at key moments, creating a deep and highly replayable experience.
Making History: The Great War
The Great War is a turn-based grand strategy game based on the epic struggles of the WWI era. Experience the battles of attrition and punishing artillery barrages. Play as any nation of the period as the modern world of industrialized warfare replaces an age of kings with a struggle of ideologies.
Breachway
Explore the galaxy in this deckbuilding, sci-fi roguelike where ship upgrades and crew management are key to your survival. Optimize resource generation, engage in intense turn-based battles, and take on ever-growing threats as you seek out The Signal.
Medieval Monarch
In the medieval era, assume the role of a lord and engage with other lords，develop fiefdoms, and employ strategies involving intrigue, warfare, and plunder. Expand your territory and strengthen your house lineage Or, be a god, manipulate the world? This game primarily strategic role-playing elements
Xenonauts 2
Wage a global war of resistance against an alien invasion. Command turn-based tactical battles, build a network of covert bases, directly control your fighter wings, and achieve strategic victory in a simulation of asymmetric warfare against a technologically superior foe.
Dummynation
Geopolitical management game with real-time shifting borders and a streamlined gameplay, designed to minimize all burdensome chores while allowing an absolute strategic control, from military recruitment and deployment, to diplomatic and economic management.
Imperiums: Greek Wars
Unique combination of turn-based 4X and historical grand strategy with a mythological twist. Explore the ancient world and build a world leading civilization. Survive, expand, conquer... and win!
Crusader Kings III
Love, fight, scheme, and claim greatness. Determine your noble house’s legacy in the sprawling grand strategy of Crusader Kings III. Death is only the beginning as you guide your dynasty’s bloodline in the rich and larger-than-life simulation of the Middle Ages.
Tropico 3
Become the dictator of a remote island during the Cold War. Charm, persuade, intimidate, oppress, or cheat your people to stay in power! Are you a kind and generous leader? A corrupt and ruthless tyrant ruling with an iron fist?
Star Dynasties
Take the reins of a feudal dynasty in a divided galaxy following the destruction of earth. Star Dynasties is a turn based, procedurally generated narrative of human drama and personal politics, mixed with a light empire management layer. Your choices. Your legacy.
Cataclismo
Design and build fortresses brick by brick to stand against endless hordes of Horrors in this real-time strategy game with resource management, siege defense, and exploration. Lead from the ramparts, push back the darkness, and hold fast against the creatures of the Mist.
Terra Invicta
An alien invasion has fractured humanity into seven ideological factions each with a unique vision for the future. Lead your chosen faction to take control of Earth’s nations, expand across the Solar System, and battle enemy fleets in tactical combat.Most played games like Sigma Theory: Global Cold War on Steam
Take a look at the top games like Sigma Theory: Global Cold War that are currently attracting the largest player bases on the Steam platform, as of April 17th 2025.
1. Crusader Kings III
Similarity 52% Love, fight, scheme, and claim greatness. Determine your noble house’s legacy in the sprawling grand strategy of Crusader Kings III. Death is only the beginning as you guide your dynasty’s bloodline in the rich and larger-than-life simulation of the Middle Ages. Crusader Kings III is a strategy, medieval and grand strategy game developed by Paradox Development Studio and published by Paradox Interactive. Released on September 01st 2020 has received 124,131 reviews of which 112,162 were positive and 11,969 were negative resulting in a rating of 8.9 out of 10. The game has hit the top spot as the #1 most played game like Sigma Theory: Global Cold War, thanks to its 14,672 peak concurrent players over the last day.
8.9
112,162
11,969
14,672
players
2. Victoria 3
Similarity 63% Paradox Development Studio invites you to build your ideal society in the tumult of the exciting and transformative 19th century. Balance the competing interests in your society and earn your place in the sun in Victoria 3, one of the most anticipated games in Paradox’s history. Victoria 3 is a grand strategy, economy and historical game developed by Paradox Development Studio and published by Paradox Interactive. Released on October 25th 2022 has received 51,679 reviews of which 34,331 were positive and 17,348 were negative resulting in a rating of 6.6 out of 10. While seeing 4,616 players online at once in the last 24 hours, this game is currently ranked #2 among games like Sigma Theory: Global Cold War based on player count.
6.6
34,331
17,348
4,616
players
3. Terra Invicta
Similarity 50% An alien invasion has fractured humanity into seven ideological factions each with a unique vision for the future. Lead your chosen faction to take control of Earth’s nations, expand across the Solar System, and battle enemy fleets in tactical combat. Terra Invicta is a strategy, simulation and grand strategy game developed by Pavonis Interactive and published by Hooded Horse. Released on September 26th 2022 has received 6,348 reviews of which 5,118 were positive and 1,230 were negative resulting in a rating of 7.8 out of 10. While seeing 1,077 players online at once in the last 24 hours, this game is currently ranked #3 among games like Sigma Theory: Global Cold War based on player count.
7.8
5,118
1,230
1,077
players
4. Tropico 6
Similarity 56% El Presidente is back! Prove yourself once again as a feared dictator or peace-loving statesman on the island state of Tropico and shape the fate of your very own banana republic through four distinctive eras. Tropico 6 is a strategy, city builder and simulation game developed by Limbic Entertainment and Realmforge Studios and published by Kalypso Media. Released on March 29th 2019 has received 26,974 reviews of which 23,578 were positive and 3,396 were negative resulting in a rating of 8.6 out of 10. With 735 concurrent players in the last 24 hours, the game currently holds the #4 spot among the most played games like Sigma Theory: Global Cold War.
8.6
23,578
3,396
735
players
5. Old World
Similarity 64% 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? Old World is a strategy, simulation and 4x game developed by Mohawk Games and published by Hooded Horse. Released on May 18th 2022 has received 4,451 reviews of which 3,650 were positive and 801 were negative resulting in a rating of 8.0 out of 10. With 619 concurrent players in the last 24 hours, the game currently holds the #5 spot among the most played games like Sigma Theory: Global Cold War.
8.0
3,650
801
619
players
6. Sid Meier's Civilization® IV
Similarity 55% With over 6 million units sold and unprecedented critical acclaim from fans and press around the world, Sid Meier's Civilization is recognized as one of the greatest PC game franchises of all-time. Now, Sid Meier and Firaxis Games will take this incredibly fun and addictive game to new heights by adding new ways to play and win, new... Sid Meier's Civilization® IV is a strategy, turn-based strategy and turn-based game developed by Firaxis Games and published by 2K. Released on October 25th 2006 has received 3,330 reviews of which 3,094 were positive and 236 were negative resulting in a rating of 8.9 out of 10. With 598 concurrent players in the last 24 hours, the game currently holds the #6 spot among the most played games like Sigma Theory: Global Cold War.
8.9
3,094
236
598
players
7. Age of History II
Similarity 69% 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.. Age of History II is a strategy, historical and war game developed by Łukasz Jakowski and published by Łukasz Jakowski Games. Released on November 21st 2018 has received 45,797 reviews of which 41,140 were positive and 4,657 were negative resulting in a rating of 8.8 out of 10. With 541 concurrent players in the last 24 hours, the game currently holds the #7 spot among the most played games like Sigma Theory: Global Cold War.
8.8
41,140
4,657
541
players
8. Victoria II
Similarity 66% 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... Victoria II is a grand strategy, strategy and historical game developed by Paradox Development Studio and published by Paradox Interactive. Released on August 30th 2010 has received 19,390 reviews of which 17,861 were positive and 1,529 were negative resulting in an impressive rating of 9 out of 10. With 520 concurrent players in the last 24 hours, the game currently holds the #8 spot among the most played games like Sigma Theory: Global Cold War.
9
17,861
1,529
520
players
9. Imperator: Rome
Similarity 70% 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. Imperator: Rome is a strategy, grand strategy and simulation game developed by Paradox Development Studio and published by Paradox Interactive. Released on April 25th 2019 has received 26,348 reviews of which 16,999 were positive and 9,349 were negative resulting in a rating of 6.4 out of 10. With 488 concurrent players in the last 24 hours, the game currently holds the #9 spot among the most played games like Sigma Theory: Global Cold War.
6.4
16,999
9,349
488
players
10. Xenonauts 2
Similarity 55% Wage a global war of resistance against an alien invasion. Command turn-based tactical battles, build a network of covert bases, directly control your fighter wings, and achieve strategic victory in a simulation of asymmetric warfare against a technologically superior foe. Xenonauts 2 is a strategy, simulation and wargame game developed by Goldhawk Interactive and published by Hooded Horse. Released on July 18th 2023 has received 2,799 reviews of which 2,249 were positive and 550 were negative resulting in a rating of 7.8 out of 10. With 325 concurrent players in the last 24 hours, the game currently holds the #10 spot among the most played games like Sigma Theory: Global Cold War.
7.8
2,249
550
325
players
Best deals on games like Sigma Theory: Global Cold War on Steam
Discover fantastic savings with the best discounts on a variety of games like Sigma Theory: Global Cold War available on Steam right now, updated on April 17th 2025. Looking for even more deals? Use the search filters to explore a wider range of discounted games like Sigma Theory: Global Cold War.
1. Old World
Similarity 64% 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? Old World is a strategy, simulation and 4x game developed by Mohawk Games and published by Hooded Horse. Released on May 18th 2022 has received 4,451 reviews of which 3,650 were positive and 801 were negative resulting in a rating of 8.0 out of 10. Featuring a massive 95% discount, this game currently holds the #1 spot in the best deals for games like Sigma Theory: Global Cold War.
8.0
3,650
801
-95%
39.80€
1.99€
2. Rogue State Revolution
Similarity 71% Greetings your Excellency. Time to rebuild, reform and prepare for new challenges in the People's Republic of Basenji. In this thrilling political strategy, you will appoint ministers and lead the country to success. Be careful — you may find yourself replaced in the next election. Rogue State Revolution is a sandbox, atmospheric and turn-based strategy game developed by LRDGames and Inc. and published by Modern Wolf. Released on March 18th 2021 has received 494 reviews of which 381 were positive and 113 were negative resulting in a rating of 7.3 out of 10. Thanks to its incredible 92% discount, this game is now the #2 best deal in games like Sigma Theory: Global Cold War.
7.3
381
113
-92%
12.50€
1.00€
3. Revival: Recolonization
Similarity 58% Set in a post-apoc version of Earth, Revival is a 4x strategy game where the world and its rules can change at key moments, creating a deep and highly replayable experience. Revival: Recolonization is a 4x, grand strategy and turn-based strategy game developed and published by HeroCraft PC. Released on April 11th 2024 has received 396 reviews of which 288 were positive and 108 were negative resulting in a rating of 6.9 out of 10. Thanks to its incredible 91% discount, this game is now the #3 best deal in games like Sigma Theory: Global Cold War.
6.9
288
108
-91%
27.67€
2.49€
4. Tropico 3
Similarity 52% Become the dictator of a remote island during the Cold War. Charm, persuade, intimidate, oppress, or cheat your people to stay in power! Are you a kind and generous leader? A corrupt and ruthless tyrant ruling with an iron fist? Tropico 3 is a simulation, strategy and city builder game developed by Haemimont Games and published by Kalypso Media Digital. Released on November 13th 2009 has received 1,844 reviews of which 1,643 were positive and 201 were negative resulting in a rating of 8.5 out of 10. Currently offered at a significant 86% discount, this title has earned the #4 position in the best deals for games like Sigma Theory: Global Cold War.
8.5
1,643
201
-86%
9.79€
1.37€
5. Rebel Inc: Escalation
Similarity 60% 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. Rebel Inc: Escalation is a strategy, simulation and political sim game developed and published by Ndemic Creations. Released on October 13th 2021 has received 6,179 reviews of which 5,112 were positive and 1,067 were negative resulting in a rating of 8.0 out of 10. Currently offered at a significant 81% discount, this title has earned the #5 position in the best deals for games like Sigma Theory: Global Cold War.
8.0
5,112
1,067
-81%
14.74€
2.80€
6. Crusader Kings III
Similarity 52% Love, fight, scheme, and claim greatness. Determine your noble house’s legacy in the sprawling grand strategy of Crusader Kings III. Death is only the beginning as you guide your dynasty’s bloodline in the rich and larger-than-life simulation of the Middle Ages. Crusader Kings III is a strategy, medieval and grand strategy game developed by Paradox Development Studio and published by Paradox Interactive. Released on September 01st 2020 has received 124,131 reviews of which 112,162 were positive and 11,969 were negative resulting in a rating of 8.9 out of 10. Currently offered at a significant 78% discount, this title has earned the #6 position in the best deals for games like Sigma Theory: Global Cold War.
8.9
112,162
11,969
-78%
50.68€
11.15€
7. Old World
Similarity 64% 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? Old World is a game developed and published by . Released on May 18th 2022 has received 4,451 reviews of which 3,650 were positive and 801 were negative resulting in a rating of 8.0 out of 10. Currently offered at a significant 95% discount, this title has earned the #7 position in the best deals for games like Sigma Theory: Global Cold War.
8.0
3,650
801
-95%
39.80€
1.99€
8. Victoria 3
Similarity 63% Paradox Development Studio invites you to build your ideal society in the tumult of the exciting and transformative 19th century. Balance the competing interests in your society and earn your place in the sun in Victoria 3, one of the most anticipated games in Paradox’s history. Victoria 3 is a grand strategy, economy and historical game developed by Paradox Development Studio and published by Paradox Interactive. Released on October 25th 2022 has received 51,679 reviews of which 34,331 were positive and 17,348 were negative resulting in a rating of 6.6 out of 10. Currently offered at a significant 75% discount, this title has earned the #8 position in the best deals for games like Sigma Theory: Global Cold War.
6.6
34,331
17,348
-75%
50.20€
12.55€
9. Victoria II
Similarity 66% 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... Victoria II is a grand strategy, strategy and historical game developed by Paradox Development Studio and published by Paradox Interactive. Released on August 30th 2010 has received 19,390 reviews of which 17,861 were positive and 1,529 were negative resulting in an impressive rating of 9 out of 10. Currently offered at a significant 74% discount, this title has earned the #9 position in the best deals for games like Sigma Theory: Global Cold War.
9
17,861
1,529
-74%
20.00€
5.20€
10. Tropico 6
Similarity 56% El Presidente is back! Prove yourself once again as a feared dictator or peace-loving statesman on the island state of Tropico and shape the fate of your very own banana republic through four distinctive eras. Tropico 6 is a strategy, city builder and simulation game developed by Limbic Entertainment and Realmforge Studios and published by Kalypso Media. Released on March 29th 2019 has received 26,974 reviews of which 23,578 were positive and 3,396 were negative resulting in a rating of 8.6 out of 10. Currently offered at a significant 74% discount, this title has earned the #10 position in the best deals for games like Sigma Theory: Global Cold War.
8.6
23,578
3,396
-74%
39.85€
10.36€
Free games like Sigma Theory: Global Cold War on Steam
Check out this fantastic list of free-to-play games like Sigma Theory: Global Cold War you can enjoy on Steam right now, updated on April 17th 2025. Looking for even more free titles? Use the search filters to explore a wider range of free to play games like Sigma Theory: Global Cold War.
1. Half-Earth Socialism
Similarity 51% Try your hand as a global planner of a future society. Play with a wide range of technologies and policies spanning different fields and ideologies. Will you lead the world to ecological utopia or planetary ruin? Half-Earth Socialism is a simulation, strategy and card game game developed by Francis Tseng, Son La Pham, Drew Pendergrass and Troy Vettese and published by Trust. Released on July 19th 2022 has received 877 reviews of which 725 were positive and 152 were negative resulting in a rating of 7.8 out of 10. The game currently holds the #1 spot among the most played free games like Sigma Theory: Global Cold War.
7.8
725
152
5
players