Sigma Theory: Global Cold War

Sigma Theory: Global Cold War

Mi-Clos Studio · November 21, 2019 · Political Sim, Politics, Turn-Based, Management, Turn-Based Strategy

Buy the Sigma Theory: Global Cold War key for Steam from Kinguin at $0.48 — the cheapest of 17 stores we compare.

PC
Mostly Positive76% · 1,3862playing now
Best price 87 Great time to buy
$0.48-97%
lowest tracked $0.46
Kinguin Buy at Kinguin

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Where to buy Sigma Theory: Global Cold War — official stores

Fanatical
Standard Edition · Steam
-15%
$15.29
$17.99
Buy
GamersGate
GamersGate
Standard Edition · Steam
-10%
$16.19
$17.99
Buy
Gamesplanet
Standard Edition · Steam
-10%
$16.19
$17.99
Buy
MacGameStore
MacGameStore
Standard Edition · Steam
$17.99
Buy
GreenManGaming
Standard Edition · Steam
$17.99
Buy
Steam
Steam
Standard Edition · Steam
$17.99
Buy
Humble Store
Humble Store
Standard Edition · Steam
$17.99
Buy
IndieGala Store
IndieGala Store
Standard Edition · Steam
$17.99
Buy
GOG
GOG
Standard Edition · DRM-Free
$17.99
Buy
Nuuvem
Nuuvem
Standard Edition · Steam
$17.99
Buy
WinGameStore
WinGameStore
Standard Edition · Steam
$17.99
Buy

Cheapest Sigma Theory: Global Cold War keys — keyshops

Keyshops are third-party marketplaces — keys are resold and can be region-locked or a different edition. Check the listing's region & edition before buying.

Kinguin
Standard Edition · Steam
$0.48
Buy
Driffle INC
Standard Edition · Steam
$0.79
Buy
Gameseal
Standard Edition · Steam
$0.57
Buy
Eneba
Standard Edition · Steam
$0.74
Buy
CJS CD Keys
CJS CD Keys
Standard Edition · Steam
$1.62
Buy
Loaded
Standard Edition · Steam
-80%
$4.19
$20.89
Buy

Some store links are affiliate links — playze may earn a commission at no extra cost to you. It never changes the price you pay, and the cheapest confirmed price is always shown in the Best price box above.

Sigma Theory: Global Cold War price by region

Sigma Theory: Global Cold War costs £0.38 in the United Kingdom, €0.44 in Europe (EUR), $0.48 in the United States, $0.48 in Georgia (USD), zł2.46 in Poland, R$4.50 in Brazil, CA$17.41 in Canada, A$22.05 in Australia and NZ$22.79 in New Zealand right now.

Cheapest Sigma Theory: Global Cold War offer in each region, in local currency
RegionBest priceOfficial storeKey shopStores
United Kingdom £0.38 −97% £12.94 £0.38 13
Europe (EUR) €0.44 −97% €15.29 €0.44 15
United Statesyour region $0.48 −97% $15.29 $0.48 17
Georgia (USD) $0.48 −95% $9.89 $0.48 16
Poland zł2.46 −96% zł64.72 zł2.46 14
Brazil R$4.50 −87% R$34.99 R$4.50 13
Canada CA$17.41 −15% CA$17.41 — 14
Australia A$22.05 −15% A$22.05 — 14
New Zealand NZ$22.79 −10% NZ$22.79 — 12

Each row is a real price from that region's own stores, not a currency conversion, so the figures are not directly comparable. Switch regions in the header to shop the one you buy in.

Screenshots

About Sigma Theory: Global Cold War

✦ AI summary

Sigma Theory: Global Cold War puts you in charge of your nation's covert operations to recruit the world's elite scientists and seize control of a world-altering discovery before rival superpowers do. Command special agents across turn-based espionage missions involving seduction, blackmail, and tactical drone support while navigating diplomatic intrigue with over 100 NPCs and managing a dynamic cold war that spans the globe's greatest cities.

A Turn-based Strategy game in a futuristic global cold war from the award-winning creators of Out There. Recruit a squad of special agents and run your intel agency to secure the control of the singularity.

Sigma Theory: Global Cold War — game info

Platforms
Windows, macOS, Linux / SteamOS
Player modes
Single-player
PC Game Pass
Not included
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DLC & expansions

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Base game + 2 of 2 DLC at today's best prices.

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What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

✦ AI summary

Players appreciate the game's unique board game-like spy strategy concept with engaging turn-based gameplay and strong thematic elements like scientist recruitment, though many find the learning curve steep due to poor tutorials and lack of explanation. The main criticisms center on balance issues where player actions feel ineffective or predetermined, randomness that can feel unfair (high stats still failing), and limited emergent gameplay that often feels more like solving a puzzle with one correct solution rather than offering meaningful strategic choices. While fans of niche strategy games

Recommended May 23, 2026
This is a unique game, nothing quite like this in the market. It is basically a board game. You play as a boss of secret organization that tasked you to help your chosen country to win the tech rush, basically whoever earn most point the fastest win while at the same time keeping a doomdays clock as high as possible. The game itself doesn't explain itself well and the tutorial is barebone, the first wall every potential player will find it hard to overcome. But once you get the gist of it the game is very fun to play. A run took about an hour or two. The music blends in well and match with the spy theme. The random chances are there but you can guide it to your favor with preparations. There are no significant bug that I am aware while playing. No multiplayer though, there are not much point in unlocking more agents once you figure out the best agent of the role you want for the country you play. The AI does cheat with an unrealistic pace even if you are doing well. There are no room for roleplay or doing specific challenge (like pacific only or war crime only) because of the RNG which may limited your fun time of the game. There are almost no benefit or significant reward if you…
3 found this helpful
Not recommended Aug 9, 2026
TL;DR. Don't ever buy this game for its $18. If you REALLY want to try it out, you should get it at least 70% off. A scientist in my team decided to indulge in a side project to induce sapience in animals. She came back a few days later having died and uploaded her brain into a dog, which could be sent out as the best agent in the game. Another scientist came to me and demanded she get her performance heroin back. I picked the option to tell her if it's so good with enhancing performance, she should share it with the science team. She went "hell yeah" and ended up overdosing herself and a different scientist to death and instantly researched multi-dimensional gate. I sent a korean hacker to Russia so that her international hacking activities wouldn't trace back to my country. I noticed both russian scientists were bisexual and ordered her to seduce them. So she became permanently stationed in Russia keeping watch on her polycule and deleting arrest warrants in Britain, which in my mind she's doing it while sipping coffee in Star Coffee shops. (Starbucks pulled out of Russia in 2022, fun fact) This sounds incredibly fun! So why am I not recommending this game? This game is shal…
2 found this helpful
Recommended May 25, 2026
This is a very niche genre with most games being a disappointment. This game is okay. I would recommend it to try if you want a spy/diplomatic strategy game. My main complaint is that not all things seem balance is what you can do. It can also feel a bit more like a puzzle than a strategy game.. I define puzzle in that there ends up being 1 clear way of solving something. Still.. i give a positive cause this genre is fun to me and they at least made something fun.
1 found this helpful
Not recommended May 22, 2026
Everything fails. Is your guy 7+ intelligence? Guess what?! He can't hack anything. Is your guy 6+ strength? Guess what?! Can't extract anyone. Anything happens and the governments panic. Do nothing.....same outcome.
1 found this helpful
Recommended Aug 10, 2026
Best map game of all time. Once you start prioritizing hacking and diplomacy, the game becomes a lot less punishing. Wolf the goat.
Recommended Jun 17, 2026
Played once thru so far. I almost resigned since I was so far behind in research, but i caught up and passed everyone to win. Was that a fluke or a flaw in the game? There's just enough to do each turn to make the gameplay interesting. You have to think a few steps ahead when you want to grow your pool of scientists without losing agents. Graphics are simple but appealing and the iconography is clear. I especially like identifying and recruiting scientists - real OPSEC stuff. Looking forward to trying again with new agents.

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