Average Playtime: 1 hour

Sigma Theory

Add to
My games
Add to
Wishlist 8
Save to

Click to rate



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 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.
FEATURESA bold new take on the espionage game genre, set during a future global cold war
Recruit your team from 50 unique spies and field agents
Turn-based strategical and tactical-level gameplay
Order your spies to conduct operations all over the world
Experience tense and thrilling exfiltration missions where you guide your agents on a covert operation to extract high-value targets from foreign cities
Infiltrate the enemy’s Sigma programs, abducting, coercing, and seducing scientists to your side
Deploy your drone fleet to turn operations in your favor
Deceive or cooperate with your rivals during diplomatic summits
Use your diplomatic skill to balance the demands of multiple relationships: with your agents, with your superiors, with powerful private lobbies, and with your counterparts around the world
Discover 30 world-changing technologies
Hoard Sigma Theory discoveries for yourself to gain an edge in the cold war — or share them for the benefit of all mankind — or sell them to powerful private lobbies bent on preserving the old world order
Experience a dynamic emergent narrative where every decision matters and the complex web of character relationships means that no two games of Sigma Theory will ever be the same
Multiple distinct endings that respond to the player’s ethical and practical decisions throughout the game

Release date
Goblinz Studio
Mi-Clos Studio
Mi-Clos Studio
Age rating
Not rated

System requirements for macOS

  • 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

System requirements for PC

  • OS: Windows Vista
  • Processor: 1,3 GHz CPU
  • Memory: 1 GB RAM
  • Graphics: NVIDIA GT 440 or AMD Radeon HD 5550 w/ 512 MB
  • Storage: 1 GB available space
  • OS: Microsoft® Windows® 7
  • Processor: Dual-core 2Ghz CPU
  • Memory: 2 GB RAM
  • Graphics: DirectX® 10 compliant graphics card
  • Storage: 1 GB available space
Edit the game info
Last Modified: Aug 28, 2019

Where to buy


Top contributors


1 edit


1 edit
РОССИЯ В ГЛОБАЛЬНОЙ ХОЛОДНОЙ ВОЙНЕ 2029 - Sigma Theory - Обзор геймплея новой стратегии
Apr 3, 2019
Jahrein - SIGMA THEORY Oynuyor | Türkiye İle
Apr 9, 2019
Sis Bombası
On va contrôler le MONDE ! ► Sigma Theory #2
Jun 4, 2019
Domingo Replay
À la tête d'une AGENCE D'ESPIONS ! ► Sigma Theory #1
May 23, 2019
Domingo Replay
Overwatch - Sigma Lore SECRETS & Clues!
Jul 27, 2019
Master Ian G...
CoxTease - Sigma Theory
May 4, 2019
Jesse Cox
View all videos
38,997 items
Your combat drone's missile hit a building.
Negotiated a ransomware key during a diplomatic summit.
Mastery of the Body
Discovered the 5th technology in Health.
Lord of Space
Discovered the 5th technology in Astrophysics.
On the Edge
You are about to instigate a global nuclear war.
view all achievements
26 items
Checking Out Sigma Theory!! Sponsored by Mi-Clos & Goblinz Studio!!
Sigma Theory Gameplay
Highlight: Indie stream Sigma Theory #ad | @thatsoalykat
View all streams
39 items

Sigma Theory reviews and comments

Translated by
Microsoft from Deutsch
Product received for free Early Access Review Sigma Theory-Review Sigma Theory is a Game that is set a little in the Future. You play a Leader of an Agent team and you have to make that Success. The Goal: To develop The Sigma Theory for their Country first and, if possible, not to allow nuclear War (Game Over) to occur or to merge it with its own Nation. At the Beginning, you select a team Of four teams, which you send Around the Globe to hack computers, find Scientists or, in the Past, browse the Diplomats of the Countries what character they have or what they have in the Past. To use this against them. Sigma Theory is about becoming a leader in The research of the Areas to be explored in Sigma Theory: Robotics, Medicine, Finance, Neuroscience. Unfortunately, the other Countries are also researching what makes it difficult to do, because Scientists can be disloyal and also switch sides, it always depends on how YOU behave to you. Your Government will provide you with Drones that you can use as a Tool To kidnap Scientists or get what you want as a bargaining Chip. If you have the Scientists under Control they work for you ... But Beware ... There are also Agents from other Countries who will try to let you off the Scientists again. If you Can Prevent a Mission from these Agents, you can even Torture them to get information. Very exciting made. What I particularly like about the Game! The Game itself is quite simple, but is different in each game, as the AI Always acts differently. In my Passages (for example, have always played Germany), other Countries have always had their Noses at The forefront of Sigma Research. Are Countries Losing their Connection from Research ... And that is also the Aim. To get Sole Control. Be that as it may ... The Game is already worth replaying because the AI always proceeds differently ... I think it's Super. The Tension of the Game is also steadily increasing. Because when more and more Countries have left, you know, it's going to be tough, because only the Hardline Countries are left that have already done a lot of research. In my last Pass, for example, Japan had all The scientists, which is why we first had to lower the Alert Level in that Country. A Problem, because that'S how Japan was able to continue to do research. After we kidnapped the last Scientist, Japan has used what is world-shattering and also used in the Field Of Robotics ... Zack... Doomsday Clock on after 12 and Nuclear War (Game Over). Very annoying, but it is still Fun, even if you lose before the End and already think you have been on the safe Side. I can definitely Recommend the Game to Anyone and encourage me to make it a lot of Fun and I will certainly spend a few More hours with this Game. Rating: 8.1 out of 10 Points
read more