in progress...

Buy Sigma Theory: Global Cold War PC

Where can you buy cheapest Sigma Theory: Global Cold War PC Steam key? Check and compare prices from 8 stores to locate the best and the cheapest option for you among 8 offers featured on XD.deals. Now the lowest Sigma Theory: Global Cold War PC price on keyshops can be obtained on A$0.87 (96% off) and on official stores can be obtained on 96 (A$25.49 off).

Release: 21 Nov 2019
Metacritic:
tbd tbd
Steam:
Mostly Positive (875)
Buy in Official Store:
-1%
A$25.49
Buy in Keyshops:
-96%
A$0.87
See price history

Official Stores (3)

DRM:
Steam
Steam
GamersGate
Sigma Theory: Global Cold War
Windows
+2
3h ago
DRM:
Steam
GamersGate
A$25.95 A$25.49
-1%
WinGameStore
Sigma Theory: Global Cold War
Windows
+2
9h ago
DRM:
Steam
WinGameStore
A$25.56
Steam
Sigma Theory: Global Cold War
Windows
+2
1w ago
DRM:
Steam
Steam
A$25.95

Keyshops (5)

DRM:
Steam
Steam
Gameseal
Sigma Theory: Global Cold War (PC) Steam Key - GLOBAL
Windows
+2
10h ago
DRM:
Steam
Gameseal
A$25.95 A$0.87
-96%
-13% with SEAL13XDDcopy
-13% with SEAL13XDDcopy
Kinguin
Sigma Theory: Global Cold War Steam CD Key
Windows
+2
7h ago
DRM:
Steam
Kinguin
A$29.67 A$0.89
-97%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
GameBoost
Sigma Theory: Global Cold War
Windows
+2
9h ago
GameBoost
A$25.56 A$0.98
-96%
Yuplay
Sigma Theory: Global Cold War
Windows
+2
4h ago
Yuplay
A$25.56 A$1.07
-95%
Eneba
Sigma Theory: Global Cold War Steam Key GLOBAL
Windows
+2
9h ago
DRM:
Steam
Eneba
A$29.67 A$1.16
-96%
-10% with XDD10copy
-10% with XDD10copy

About Sigma Theory: Global Cold War

Sigma Theory: Global Cold War - about the game

Lead your nation's Sigma division in a tense global cold war sparked by a breakthrough scientific discovery. Recruit from 50 unique agents-investigators, soldiers, hackers, seducers-and deploy them on turn-based espionage missions to seduce targets, steal documents, or kidnap scientists across world capitals. Manage dynamic relations with over 100 NPCs through alliances, blackmail, or assassination, while countering enemy infiltrators via tracking, capture, and interrogation. Balance field operations with diplomacy to negotiate threats, recover agents, and unlock a tech tree of radical advancements like mind control or immortality. Direct exfiltrations using tactical drones in high-stakes pursuits, choosing stealth or confrontation. This ultimate espionage simulation draws strategy fans who relish covert manipulation and geopolitical maneuvering.

STORY
From the creators of the award-winning sci-fi game Out There...

In the near future, a paradigm-shifting scientific discovery looms over the world, promising radical new technologies. The world’s superpowers realize they could have the power to destroy the global financial system, wipe out entire countries or even gain access to immortality.

However, this discovery — called “The Sigma Theory” — can only be harnessed by a handful of scientists. You are placed at the head of your country’s Sigma division. Your objective is to ensure that it is your nation that reaps the benefits of Sigma Theory before anyone else.

To achieve this you will have powerful resources at your disposal: a cadre of the world’s most elite covert agents, advanced tactical drones and, of course, your own skills in diplomacy and subterfuge.

It’s a cold war out there, one in which mankind must face up to its future.

THE ULTIMATE ESPIONAGE SIMULATION
Turn-based espionage: Use your special agents to dominate the world. Seduction, blackmail, manipulation, industrial espionage… Every low blow is both permitted and encouraged.
Dynamic narrative: Develop and manage your relations with over 100 NPCs: lobbies, armed groups, politicians… Alliance, deception or assassination, you choose.
Field operations: Direct the kidnapping of your targets during gripping pursuits through the world’s greatest cities. Discretion or direct confrontation, your agent’s life is in your hands.


Recruitment
First, recruit a team of four special agents from 50 unique unlockable characters to support your missions. Each comes with their own story, motivations and traits that define their behavior during missions.
Access the investigator, soldier, hacker, seducer and other archetypes to complete your Sigma division and execute your strategy.


Espionage
When your team is ready, assign them missions around the world to gather scientists, discover compromising documents on local politicians, and more.
Exploit your agents’ abilities to seduce, manipulate and bribe your targets over to your side or have them neutralized.


Counter-espionage
Other nations will also use their agents to infiltrate your country and seize your scientists. Track, capture and interrogate them to gain information on your enemies, then exchange them for ransom when they are no longer useful.


Exfiltration
Order your agents to exfiltrate scientists recruited to your cause during gripping turn-based exfiltration phases through the world’s greatest capitals. Choose the position your drones wisely to support these delicate missions.


Diplomacy
In Sigma Theory, diplomacy is the key to achieving your goals. Meet your foreign counterparts and further your objectives using flattery, threats or blackmail. You can also recover your captured agents, advance your research, and much more. Develop your relations with powerful lobbies and armed and influential groups to obtain their favor. But be careful, they may turn on you.


Tech Tree
Sigma Theory is the cause of this cold war. Rally scientists from around the world to your cause to discover new technologies to gain the edge and change the world. Mind control, destabilization of the world economy, robot soldiers, immortality… Will you keep these discoveries for yourself or share them with the world?
Games that inspired us:
XCom, Phantom Doctrine, Plague Inc, Pandemic (board game), Rocket Ranger, Tropico, Armello, Civilization, curious expedition and so much more
Interface:
GermanEnglishFrenchRussianSimplified Chinese
Audio:
English
Subtitles:
GermanEnglishFrenchRussianSimplified Chinese

Age rating

Unavailable
Metacritic:
tbd tbd
Steam:
Mostly Positive (875)

System requirements

Minimum:

  • Processor: Dual-core 2Ghz CPU
  • Memory: 2 GB RAM
  • Graphics: DirectX® 10 compliant graphics card
  • Storage: 1 GB available space

Recommended:

  • Processor: Dual-core 2Ghz CPU
  • Memory: 2 GB RAM
  • Graphics: DirectX® 10 compliant graphics card
  • Storage: 1 GB available space

Minimum:

  • OS: Mac OS X 10.7
  • Processor: Dual Core 2Ghz
  • Memory: 2 GB RAM
  • Graphics: Hardware Accelerated Graphics with dedicated memory
  • Storage: 500 MB available space

Recommended:

  • OS: Mac OS X 10.7
  • Processor: Dual Core 2Ghz
  • Memory: 2 GB RAM
  • Graphics: Hardware Accelerated Graphics with dedicated memory
  • Storage: 500 MB available space

Minimum:

  • OS: Ubuntu 12.04+ Desktop only
  • Processor: Dual-core 2Ghz CPU
  • Memory: 4 GB RAM
  • Storage: 2 GB available space

Recommended:

  • OS: Ubuntu 12.04+ Desktop only
  • Processor: Dual-core 2Ghz CPU
  • Memory: 4 GB RAM
  • Storage: 2 GB available space

Price history

Historical low
Keyshops
-
-
-
Official Stores
-
-
-
Join our Discord
Get instant help from our community and stay updated on the latest deals
Set Price Alerts
Get notified by email when game prices drop to your target
Create Free Account
Unlock wishlists, price alerts, and Steam sync

FAQ

8 questions

Before you start looking for a cheap Sigma Theory: Global Cold War CD Key, take a moment to check the essentials. Developed by Mi-Clos Studio. Published by Fractale. PC released date: 21 Nov 2019. Genres: Strategy, Simulation. Categories: Family Sharing, Steam Workshop, Single-player, Steam Achievements, Steam Cloud, Steam Leaderboards. Sigma Theory: Global Cold War reviews: Metascore: tbd. Metacritic users: tbd. Steam reviews: 77% of the 875 user reviews for this game are positive.

Q Can I play Sigma Theory: Global Cold War on Steam Deck?

No, not right now. Valve marks Sigma Theory: Global Cold War as Steam Deck Unsupported , so it won't launch via Proton at this time. Keep an eye on XD.deals - we track Proton breakthroughs and community fixes, and we'll flag it the moment there's a working way to play Sigma Theory: Global Cold War on Steam Deck.

Yes. A Sigma Theory: Global Cold War Steam version exists. Pick any offer tagged Steam Key on XD.deals, redeem it in the desktop client, and play Sigma Theory: Global Cold War on Steam PC.

Yes. Once your Steam key is redeemed, you can launch Sigma Theory: Global Cold War in Offline Mode via Steam. Your save files will sync the next time you go online.

Yes, you can buy a Sigma Theory: Global Cold War Steam Key directly on the Steam Store. At XD.deals, we aggregate all available Steam DRM offers so you can compare cheap Sigma Theory: Global Cold War steam deals in one place.

You'll find every live sale & discount for Sigma Theory: Global Cold War right here on XD.deals. Our price tracker currently lists 3 official-store offers and 5 keyshop deals. Check the table above for the lowest price, compare against the game's historical low, and set a price alert so you never miss the next drop.

With XD.deals, PC gamers can instantly see where to buy a cheap Sigma Theory: Global Cold War PC Steam key. Our real-time price-comparison engine and curated coupon database track every official store and trusted keyshop so you dont have to. Right now we detect this game in {1} live offers from stores and keyshops.

Yes. An official Sigma Theory: Global Cold War Steam store page is live, so you can buy Sigma Theory: Global Cold War on Steam or buy any Sigma Theory: Global Cold War PC Steam Key on XD.deals and redeem it instantly.

No - XD.deals itself isn't a store. We're a price-comparison service that tracks the best offers for Sigma Theory: Global Cold War across official stores and verified keyshops. Click "Shop Now" next to the deal you want, and you'll be redirected to the retailer's website to complete your purchase and receive the key there.

game.details.topPrices.heading

1 Gameseal Gameseal Keyshop
-96% A$0.87
2 Kinguin Kinguin Keyshop
-97% A$0.89
3 GameBoost GameBoost Keyshop
-96% A$0.98
4 Yuplay Yuplay Keyshop
-95% A$1.07
5 Eneba Eneba Keyshop
-96% A$1.16

Ready to ride? Set a price alert on XD Deals and grab a discounted Sigma Theory: Global Cold War Steam key the moment it reaches its next historical low.

Create Alert