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Galactic Civilizations III

Galactic Civilizations III

Build a civilization that will stand the test of time in the largest space-based strategy game ever! Choose from dozens of unique races and make a name for yourself across the galaxy through diplomacy, espionage, technological advances, and more.

Released May 14, 2015 Developer Stardock Entertainment Platforms Windows AliensSci-fi4XTurn-Based StrategySandbox
View on Steam ↗ $29.99 (US · as of 2026-10-21)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-26 · quoted reviews as of 2026-10-15.

76.7%positive10,400 reviews
Recommended · 239 found this helpful

“Is the game fun? - yes. Should I buy it? - if you like turn based 4x this one is a must and the best one currently on the market (imho). The Crusades expansion has pretty much nailed all the issues I had with the game. - The race creation is probably the most robust (and rpg…”

— a player, Steam review · 1,371 hrs played
Recommended · 186 found this helpful

“EDIT (4/10/22): I've bought the beta of Galactic Civilizations 4 on Epic's store. It's essentially Galactic Civilizations 3 with a few new wrinkles and a new victory condition (a lot of the same resources were copied and pasted into 4). The biggest wrinkle is planetary systems…”

— a player, Steam review · 1,005 hrs played
Not recommended · 225 found this helpful

“I really tried to like this game, but after 35h I have to come to the conclusion that it is very hard to like this 4X game. (played with all the dlc) It basicly fails 3 out of the 4X. Exploration is good and fairly interesting But expanding is hardly feasible as even with…”

— a player, Steam review · 35 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-06 via SteamCharts.

6,225all-time peak
0 1k 2k 2015 2017 2019 2021 2023 2025 No data collected for this period 1.9k avg · May 2015

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-10-21.

102achievements
3.1%median completion
0.2%rarest: One more dimension conquered ...
78.1% of players 66.6% of players 61.0% of players 51.2% of players 48.9% of players 45.7% of players 41.4% of players 37.7% of players 33.7% of players 30.7% of players 28.5% of players 26.0% of players 21.2% of players 17.5% of players 14.0% of players 12.7% of players 11.1% of players 10.5% of players 9.6% of players 9.6% of players 9.1% of players 8.8% of players 8.7% of players 8.0% of players 7.7% of players 7.6% of players 7.1% of players 7.0% of players 6.9% of players 6.5% of players 6.5% of players 6.3% of players 6.1% of players 5.9% of players 5.8% of players 5.1% of players 5.0% of players 5.0% of players 4.7% of players 4.6% of players 4.5% of players 4.4% of players 4.3% of players 4.3% of players 4.3% of players 4.3% of players 4.1% of players 3.9% of players 3.4% of players 3.4% of players 3.3% of players 3.1% of players 3.1% of players 3.0% of players 2.9% of players 2.7% of players 2.6% of players 2.5% of players 2.5% of players 2.3% of players 78.1% 0% most earned rarest
Almost everyone has
78.1%Our New Home — Colonize your first planet
66.6%Warrior — Win a Battle
61.0%Aliens?!?! — Meet your first Race in Galactic Civilizations III
Rarest badges of honor
0.2%One more dimension conquered ... — Win as Xraki
0.2%Imperial March — Win as Scryve
0.2%Served for dinner — Win as Phamysht

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$29.99current · sampled 2026-10-21 11:53 UTC
$9.89lowest since tracking began2026-09-07
US29.99 USD
EU30.49 EUR
UK26.75 GBP
Australia41.95 AUD
Canada35.99 CAD
Japan3,850 JPY
Brazil99.99 BRL
China109.00 CNY

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$16 Brazil Japan Canada Australia US EU UK≈$36

Cheapest → most expensive, converted to USD at ECB reference rates (2026-10-21). Relative comparison only.

$0 $25 $50 07-11 07-30 08-19 09-09 09-29 10-21

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Oct 01, 2026
Autumn Sale: Up to 75% off Galactic Civilizations titles

Up to 75% off Galactic Civilizations titles during the 2026 Autumn Sale See all Deals Newly Released: Galactic Civilizations IV deals: Galactic Civilizations III deals: Other Galactic Civilizations de

Sep 07, 2026
Publisher Sale: Up to 75% off Galactic Civilizations titles

Up to 75% off Galactic Civilizations titles during the 2026 Publisher Sale View Entire Sale Newly Released: Galactic Civilizations IV deals: Galactic Civilizations III deals: Other Galactic Civilizati

Nov 13, 2025
Announcing Expansion Pass 2 for Galactic Civilizations IV

Stardock Entertainment announced today Expansion Pass 2 for the acclaimed space 4X strategy game Galactic Civilizations IV. The first content drop, "Tales of the Terran Alliance," will launch December

Feb 27, 2025
GalCiv IV Releases New DLC and Free Update

Tales of the Arnor DLC Play as a new machine race civilization, discover the history of the Yor and Iconians in a new campaign, and experience new in-game event content Prepare to delve into the Galax

Dec 10, 2024
Galactic Civilizations IV: Megastructures Expansion Now Out

Acclaimed 4X strategy title adds colossal structures that create new conflict and diplomatic opportunities for late-game empires https://store.steampowered.com/app/1357210/Galactic_Civilizations_IV/ h

Games like Galactic Civilizations III

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Galactic Civilizations® II: Ultimate Edition Galactic Civilizations® II: Ultimate Edition 78.2% · 1,274 reviews shares 4x, Grand Strategy, Moddable, Aliens Age of Wonders: Planetfall Age of Wonders: Planetfall 79.5% · 3,828 reviews shares 4x, Hex Grid, Aliens, Turn Based Interstellar Space: Genesis Interstellar Space: Genesis 84.7% · 706 reviews shares 4x, Grand Strategy, Turn Based, War Shadow Empire Shadow Empire 83.2% · 1,545 reviews shares 4x, Hex Grid, Grand Strategy, Aliens Galactic Civilizations IV Galactic Civilizations IV 73.1% · 1,838 reviews shares 4x, Hex Grid, Grand Strategy, Moddable ENDLESS™ Space 2 ENDLESS™ Space 2 81.9% · 12,476 reviews shares 4x, Grand Strategy, Moddable, Turn Based Breachway Breachway 80.2% · 954 reviews shares 4x, Grand Strategy, Moddable, Turn Based ENDLESS™ Space - Definitive Edition ENDLESS™ Space - Definitive Edition 79.3% · 5,885 reviews shares 4x, Grand Strategy, Aliens, Turn Based

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-12.

GenresStrategy
Player tagsAliens · Sci-fi · 4X · Turn-Based Strategy · Sandbox · 3D · Grand Strategy · Moddable · Hex Grid · PvE · Strategy · PvP (SteamSpy community voting)
FeaturesSingle-player · Multi-player · PvP · Online PvP · Co-op · Online Co-op · Steam Achievements · Steam Trading Cards
LanguagesEnglish * , French, German, Russian *
Achievements102
Official sitehttps://www.galciv3.com/
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS *: 64-bit Windows 10 / 8.x / 7 Processor: 1.8 GHz Intel Core 2 Duo / AMD K10 Dual-Core Memory: 4 GB RAM Graphics: 512 MB DirectX 10.1 Video Card (AMD Radeon HD5x00 Series / Nvidia GeForce 500 Series / Intel HD 4000 or later) DirectX: Version 10 Network: Broadband Internet connection Storage: 12 GB available space Sound Card: DirectX Compatible Sound Card