Sigma Theory

1.2.12

Plug In Digital

4.03

144 reviews

10,000+
Downloads

$6.99

Global Cold War

4.03 · 144 reviews · 10,000+ downloads

iOS version

About Sigma Theory

Sigma Theory is a strategy app developed by Plug In Digital.

Download Statistics

Sigma Theory has been downloaded 12 thousand times. In the last 30 days, the app was downloaded 180 times.

User Ratings

Sigma Theory is rated 4.03 out of 5 stars. The rating is based on 140 ratings.

App Information

Sigma Theory costs $6.99 to download. The APK download size is 148.34 MB. The latest version available is 1.2.12. The last update was on October 13, 2025.

Technical Requirements

Sigma Theory requires Android 5.1+ or higher. The app has a content rating of Medium Maturity. The app has been available on Google Play November 2022.

Description

Sigma Theory is a Turn-based Strategy game in a futuristic global cold war from the award-winning creators of Out There.

More data about Sigma Theory

Price	$6.99
Total downloads	12 thousand
Recent downloads	180
Rating	4.03 based on 140 ratings
Ranking	Medium ranked
Version	1.2.12
APK size	148.3 MB
Number of libraries	32
Designed for Android	5.1+
Maturity	Medium Maturity
Ads	NO ads

App Performance Report

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Alternative downloads for the Sigma Theory app

Sigma Theory compared with similar apps

Common keywords of similar apps

Theory Cold Agents Espionage Special Future Discovery Direct Sigma Global War Turn Based World

Keywords missing from this app

Game Strategy Country Lead Diplomacy Empire Real Nations Play Build Time Economy Players Trade Control Military Supreme Commander Countries Leader Recent Command Nation Map Options Conquer Games Multiplayer Units Experience Conflict Alliances Features Improve Power Resources Make Choose Domination Battles Intelligence Weapons Missiles Countryballs

Google Play Rating history and histogram

Downloads over time

Sigma Theory has been downloaded 12 thousand times. Over the past 30 days, it has been downloaded 180 times.

Changelog of Sigma Theory

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Developer information for Plug In Digital

Plug In Digital

remi@plugindigital.com

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Comments on Sigma Theory for Android

★★★★☆ Vinícius Dias · Dec 12, 2025

The lack of a tutorial was an incredibly bad decision. This game, although not difficult, is very far from intuitive. There are quite a few ways to get an edge over other countries and what to focus on during espionage, so as long as you've got the basics down, it's a good time to explore with agents. And that's about it... Replayability is limited by your interest in the spies and whether you're willing to make them work, but it can only get you so far. Overall, it's ok for play pass.

★★★★★ Adrian Nicolicea · Nov 19, 2025

Decent game, good replayability, good decision-making, nice graphics, cute story, cute endings, but it gets too repetitive. Wife mechanic also sucks is more of a negative wildcard than anything. Great experience overall, played for 3 days like crazy.

★★★★★ L · Mar 21, 2026

I cannot recommend this game followed by their (sequel?) Over the Omega enough! I had downloaded both games on the same day, not realizing they were made by the same creator. I started with Over the Omega and then played this game a week later. Only after finishing Sigma Theory did I realize how deep and artistic these two games are! Great for people who enjoy strategy games, asset management with a lot of involved storytelling! Great for exploring ideas of what makes us human. Kudos to the Devs

★★★★★ Riley Chance · Aug 18, 2023

Own about this and the PC copy, this runs leagues smoother than the PC copy of this game. And it's fun too. Sigma Theory AKA politician having a heart attack simulator is you taking the perspective of a spymaster and diplomat who's trying to help your country win a Cold War for new technologies that will redefine what it means to be human. I will not spoil the god tier ending. But be warned that there is a pun intended somewhere in this. So synchronize the Doomsday Clock to 1 a.m. and have fun

★☆☆☆☆ Sweet Balls · Jan 1, 2023

I only give it one star because I already pay $6 for this game, only for the countries I always main in the Steam version (USA, China, South Korea and Germany) to be in the pay wall for another $4?! Which is all free in the Steam version ffs! Those countries are not even unlockable here in mobile version once you finished the game using the free countries you have. Steam version dlcs only have Nigeria and Brazil in the paywall, and they cost $2 each. Sheesh!

★☆☆☆☆ Chico · Nov 14, 2022

I bought this game and the added content. For some reason unknown to me, it says I was refunded, and now my bought content is locked. Fix this bug. Bought the bundle again and after a few days it refunded me again... smh

★★☆☆☆ Adam K Bice · Feb 24, 2026

A tutorial would be nice. Choose story mode as it seemed to be a regular game "enhanced with a personal narrative." The Classic mode may have a built-in tutorial, but it should really be an option presented to the player before starting any first-time play through.

★☆☆☆☆ Suellen Laing · Oct 18, 2022

Can't even start the game, recruitment failed, recruitment failed fine...game failed to interest me then

Google Play Rankings for Sigma Theory

Top rankings

Rank	Country	Category	List
197	Italy	Strategy	Top Grossing

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Ranking history in Italy

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Technologies used by Sigma Theory

Sigma Theory is requesting 10 permissions and is using 32 libraries.

Permissions

Network communication

view network connections, full network access, Google Play billing service, Google Play license check

System tools

prevent phone from sleeping

Extra

android.permission.ACCESS_ADSERVICES_AD_ID, android.permission.ACCESS_ADSERVICES_ATTRIBUTION, com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE, com.google.android.gms.permission.AD_ID, com.pid.sigmatheory.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Ad network libraries

AppsFlyer

Social libraries

Facebook

Google Play Games Services

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Firebase Android Library Icon

Firebase

Android Jetpack AppCompat AndroidX Activity Android Library Icon

AndroidX Activity Android Activity Saved State Android Library Icon

Android Activity Saved State AndroidX Loader Android Library Icon

AndroidX Loader Android Jetpack Media Android Library Icon

Android Jetpack Media

Android Transition Support Library Kotlin Android Library Icon

Kotlin

Android Support Library collections

Android Support VectorDrawable

AndroidX Legacy: Support Library core utils AndroidX Cursor Adapter Android Library Icon

AndroidX Cursor Adapter

AndroidX Local Broadcast Manager

Android Support Library Print

Android Support Library Document File

AndroidX Legacy: Support Library core UI

Android Support Library Async Layout Inflater JetBrains Annotations Android Library Icon

JetBrains Annotations IntelliJ IDEA Android Library Icon

IntelliJ IDEA Google ZXing Android Library Icon

Google ZXing BoltsFramework Android Library Icon

BoltsFramework Unity 3D Android Library Icon

Unity 3D

FMOD Ex Programmers API

Google Play Licensing Service

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