RATING / ESRB / A Created with Sketch. RATING / ESRB / E Created with Sketch. RATING / ESRB / E10 Created with Sketch. RATING / ESRB / M Created with Sketch. RATING / ESRB / T Created with Sketch.
RATING / PEGI / 12 Created with Sketch. RATING / PEGI / 16 Created with Sketch. RATING / PEGI / 18 Created with Sketch. RATING / PEGI / 3 Created with Sketch. RATING / PEGI / 7 Created with Sketch. icon_pin Created with Sketch.

Sigma Theory: Global Cold War

in library

3.3/5

( 47 Reviews )

3.3

47 Reviews

English & 4 more
Offer ends on: 10/07/2025 09:59 EEST
Offer ends in: d h m s
17.994.49
Lowest price in the last 30 days before discount: 4.49
Why buy on GOG.COM?
DRM FREE. No activation or online connection required to play.
Safety and satisfaction. Stellar support 24/7 and full refunds up to 30 days.
Sigma Theory: Global Cold War
Description
STORYFrom 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 o...
User reviews

3.3/5

( 47 Reviews )

3.3

47 Reviews

{{ review.content.title }}
Product details
2019, Mi-Clos Studio, ...
System requirements
Windows 7 / 8 / 10, 1,3 GHz CPU, 1 GB RAM, NVIDIA GT 440 or AMD Radeon HD 5550 w/ 512 MB, 1 GB...
DLCs
Sigma Theory: Global Cold War - Original Soundtrack, Sigma Theory: Brazil - Additional Nation, Sigma...
Time to beat
4.5 hMain
6.5 h Main + Sides
14.5 h Completionist
7 h All Styles
Description



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
Popular achievements
Goodies
Contents
Standard Edition
Deluxe Edition
soundtrack (MP3)
DLC: Sigma Theory: Nigeria - Additional Nation
DLC: Sigma Theory: Brazil - Additional Nation
System requirements
Minimum system requirements:
Why buy on GOG.COM?
DRM FREE. No activation or online connection required to play.
Safety and satisfaction. Stellar support 24/7 and full refunds up to 30 days.
Time to beat
4.5 hMain
6.5 h Main + Sides
14.5 h Completionist
7 h All Styles
Game details
Works on:
Windows (7, 8, 10, 11), Linux (Ubuntu 16.04, Ubuntu 18.04), Mac OS X (10.11+)
Release date:
{{'2019-11-21T00:00:00+02:00' | date: 'longDate' : ' +0200 ' }}
Size:
609 MB

Game features

Languages
English
audio
text
Deutsch
audio
text
français
audio
text
русский
audio
text
中文(简体)
audio
text
You may like these products
Users also bought
User reviews

Posted on: April 21, 2019

Early Access review

flyattic

Verified owner

Games: 175 Reviews: 4

Fun title

Great fun , a few small gui bugs atm, simple but compelling gameplay. Not sure if they're adding anything but I hope they do and expand on it because it's a great base game. Feels very much like a board game in many ways. Multiplayer would be a very interesting concept in a setting like this.


Is this helpful to you?

Posted on: June 24, 2023

Ravise

Verified owner

Games: 222 Reviews: 52

Computerized tabletop

The game concept is really interesting - agents, spy missions, diplomats... But there are way too much rough edges for the concept to become enjoyable. I'd really want to like the game better, but...: Basically no chance to catch up if you fall down the sigma ladder. Sigma technologies range from borderline sci-fi to flat magic. Fair money, free electricity, teleportation. "We teleported two of your agents into our prisons. F-you!" --foreign diplomat. Not only nations, but armed groups, influential factions, global organizations... your own government and your spouse. Relationship building is way too much busy. You will likely pass most of them without any interactions. What's the most strange thing to me is directing extraction missions. Your agent will call you and leave the decisions on you. How am I supposed to know the situation better? It's called "field decision" for a reason. I appreciate the spy aspect is focused on intelligence gathering, working with people etc., but extractions... eh. Linear - where you make decisions on behalf of your agent; via airplanes - but you need to smuggle the scientist on board; and even if voluntary, you need to overcome foreign nation's counter-intelligence. Yes, there are unique perks to every character, yes, there is large amount of stuff to interact with, but there is not really much "content". Sometimes you get offered missions, but you'll have to guess how to complete them. In my eyes, punishment for failure doesn't match success reward. On average, saying no is the safe option. Game like this would work as tabletop for a group of friends - but singleplayer on a PC? Fine 4 hours, but that's it - I have no need to replay this piece, especially considered the unsatisfying ending of the story: (spoiler follows) whoever wins the sigma race gets evolved to god, is able to manipulate time, decides to travel to the past and revert all research on sigma so the thing would never happen. Next round? Please, don't.


Is this helpful to you?

Posted on: August 6, 2023

ErnestLemingway

Verified owner

Games: 255 Reviews: 20

Difficult but satisfying

Folks says its XCOM-like game, but in fact, it isn't. Sure, you are head of secret, govermental agency, but that where similarities ends. Sigma Theory is about politics, spies and conspiracy, so you more like leading CIA operation rather than full scale war. Your main work is to oversee researching of advanced technologies, that will give your nation edge over the rest of world. To do this, you will recrut scientists (in various ways), do some diplomatic matters, interrogate captured spies and send agents to achieve any of this. There's a lot of great mechanincs, like every agent has characteristics, that makes them more or less suitable for certain action or scientists and diplomats may be more likely to work in your favor if you gather some intels about them first. Sometimes you'll need to move someone from hostile country and exfiltration happens, what is cool and gives kinda 007's vibes. But as a game mostly about politics, every failure here is very pricey. Some of them are simply unavoidable and push you into quagmire, so you have to have plan B (or even C). But actually it adds some tension and weight to every decision you make. The bad thing is game itself barely explain you how different perks or mechanics works, so you'll probably fail twice or thrice before get the idea, what to do. Also, the pace is very high, so doing fancy thing isn't an option and casual mode isnt available. Technically its mostly ok, with some minor annoying features like flood of popups, occasinaly glitching interface and blocks of generic text, one for every event of certain category (unfortunately it isnt Jagged Alliance tier of personalizing content, dispite attempts). Overall its a great game in rather rarely touched genre, when you may feel like guy from 3-Letter-Agency, who command some secret operation on foreign grounds, trying to both please superioirs and avoid political disaster. It has some problems but I have fun plaing it, so 4 stars.


Is this helpful to you?

Posted on: February 10, 2024

ChenSun

Verified owner

Games: 332 Reviews: 1

I like this game, but.....

I'm a big fan of spy simulation games, so soon as I saw this game I bought it right away. It runs like a turn based tabletop game with a cool spy theme. There's a technological race, you have to assemble your spy team and try to beat out the other countries. The missions get intenses at points and sometimes you might do things you may not want to do to get ahead of the competition. Keep in mind this game is all text based with images to help your imagination, like a tabletop RPG. There customizable features to make the gamer your own, like you can change character portraits, names, give them a all new set of stats, you can make it as easy or as hard as you like. The characters you choose from have stats that are easy to understand because instead of driving you mad with too many stat numbers, you only have two attribute numbers, one for smarts and one for strength, your skills are represented by icons with a title to explain what it is, I like this alot because I don't have to stare at the screen for hours reading off stats, don't get me wrong, I like my games crunchy too, but it doesn't have to be that way with every game. The simple stats and skills work really well for this game, I love it! I see some reviews complaining about how random the game is, yeah it's a tabletop RPG game so there are dice rolls, it's part of the fun for me. I love when my tabletop rpgs have dice rolls/RNG, it makes it fun and unpredictable I love the game "but" I don't like the fact that the story text never really changes, you get the same story text popping up in the same order. You have a spouse and every game you start off with the same conversation with your spouse every time. I would have loved for this game to have random story scenarios. The story doesn't get in the way of the game too much because your missions are always randomly setup, so I'm glad for that. You can also play with story off and that makes the game feel even more like a tabletop RPG to me.


Is this helpful to you?

Posted on: December 4, 2024

LatwPIAT

Verified owner

Games: 104 Reviews: 1

Repetitive, opaque, and sometimes buggy

The game has a pretty repetitive structure of assigning agents to tasks - not unusual in these kinds of games, but made frustrating by the near complete opaqueness of what doing anything will accomplish or the probability it will succeed. It seems to be a game that wants you to play it multiple times, to try and fail until you learn which buttons you should push and which you shouldn't, but the core gameplay of assigning agents to tasks and rolling dice against hidden probabilities is probably not going to provide a very strong incentive to play the game very often to all but a select few. Buttons would sometimes not respond, in one instance locking me in a tutorial screen and forcing me to close the game externally.


Is this helpful to you?

1
...
3
5
...
...
8

Something went wrong. Try refresh page.

This game is waiting for a review. Take the first shot!
{{ item.rating }}
{{ item.percentage }}%
Awaiting more reviews
An error occurred. Please try again later.

Other ratings

Awaiting more reviews

Add a review

Edit a review

Your rating:
Stars and all fields are required
Not sure what to say? Start with this:
  • What kept you playing?
  • What kind of gamer would enjoy this?
  • Was the game fair, tough, or just right?
  • What’s one feature that really stood out?
  • Did the game run well on your setup?
Inappropriate content. Your reviews contain bad language. Inappropriate content. Links are not allowed. Inappropriate content. Content contains gibberish. Review title is too short. Review title is too long. Review description is too short. Review description is too long.
Not sure what to write?
Filters:

No reviews matching your criteria

Written in
English Deutsch polski français русский 中文(简体) Others
Written by
Verified ownersOthers
Added
Last 30 daysLast 90 daysLast 6 monthsWheneverAfter releaseDuring Early Access

GOG Patrons who helped preserve this game
{{controller.patronsCount}} GOG Patrons

Error loading patrons. Please refresh the page and try again.

Delete this review?

Are you sure you want to permanently delete your review for Sigma Theory: Global Cold War? This action cannot be undone.

Report this review

If you believe this review contains inappropriate content or violates our community guidelines, please let us know why.

Additional Details (required):

Please provide at least characters.
Please limit your details to characters.
Oops! Something went wrong. Please try again later.

Report this review

Report has been submitted successfully.
Thank you for helping us maintain a respectful and safe community.