Buy Galactic Civilizations III - Mercenaries Expansion Pack PC Key

This content requires the base game: Galactic Civilizations III

Looking for a cheap Galactic Civilizations III - Mercenaries Expansion Pack key? As of 21 Aug 2026 the cheapest key costs £3.10 at Difmark. We compare 16 offers from 15 stores, spanning £3.10 to £10.50. In keyshops the lowest price is £3.10, in official stores it starts at £6.59. With this many sellers the gap between the extremes is often several times over, so picking the store matters more here than waiting for a sale. This is an add-on, so you also need the base game to play it. That costs £1.48 today, which puts the pair at £4.58. On PC you buy a key that you activate in Steam or another client, and this is the widest market we track, with more than a quarter of games carrying a keyshop offer.

Release: 18 Feb 2016
Metacritic:
81 7.0
Steam:
Mixed (50)
Buy in Official Store:
-10%
£6.59
Buy in Keyshops:
-65%
£3.10
See price history

Official Stores (7)

DRM:
Steam
Steam
Gamesplanet US
Galactic Civilizations III - Mercenaries Expansion Pack
Windows
9h ago
DRM:
Steam
Gamesplanet US
£7.33 ~£6.59
-10%
Gamesplanet FR
Galactic Civilizations III - Mercenaries Expansion Pack
Windows
9h ago
DRM:
Steam
Gamesplanet FR
£8.79 ~£7.53
-14%
Gamesplanet DE
Galactic Civilizations III - Mercenaries Expansion Pack
Windows
9h ago
DRM:
Steam
Gamesplanet DE
£8.79 ~£7.53
-14%
Gamesplanet UK
Galactic Civilizations III - Mercenaries Expansion Pack
Windows
1w ago
DRM:
Steam
Gamesplanet UK
£9.09 £7.65
-15%
GamersGate
Galactic Civilizations III - Mercenaries Expansion Pack
Windows
1w ago
DRM:
Steam
GamersGate
£9.09 £8.18
-10%
-10% with XDD10copy
-10% with XDD10copy
Green Man Gaming
Galactic Civilizations III - Mercenaries Expansion Pack
Windows
5w ago
DRM:
Steam
Green Man Gaming
£9.09 £8.50
-6%
Steam
Galactic Civilizations III - Mercenaries Expansion Pack
Windows
5w ago
DRM:
Steam
Steam
£9.09

Keyshops (9)

DRM:
Steam
Steam
Difmark
Galactic Civilizations III - Mercenaries Expansion Pack (DLC)
Windows
3w ago
DRM:
Steam
Difmark
£9.09 ~£3.10
-65%
-15% with XDDEALScopy
-15% with XDDEALScopy
Galactic Civilizations III - Mercenaries Expansion Pack (DLC) (PC) Steam Key GLOBAL
5.0
Windows
20h ago
DRM:
Steam
Eneba
£8.79 ~£3.43
-60%
-10% with XDD10copy
-10% with XDD10copy
Gameseal
Galactic Civilizations III - Mercenaries Expansion Pack (PC) Steam Key - GLOBAL
Windows
14h ago
DRM:
Steam
Gameseal
£9.09 ~£3.44
-62%
-17% with SEAL17XDDcopy
-17% with SEAL17XDDcopy
G2Play
Galactic Civilizations III - Mercenaries Expansion Pack PC Steam CD Key
Windows
19h ago
DRM:
Steam
G2Play
£8.79 ~£3.77
-57%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
Kinguin
Galactic Civilizations III - Mercenaries Expansion Pack PC Steam CD Key
Windows
19h ago
DRM:
Steam
Kinguin
£8.79 ~£3.77
-57%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
Driffle
Galactic Civilizations III - Mercenaries Expansion Pack DLC (Global) (PC) - Steam - Digital Key
Windows
2d ago
DRM:
Steam
Driffle
£10.25 ~£3.87
-62%
-6% with XDDEALS6copy
-6% with XDDEALS6copy
CJS-CDKeys
Galactic Civilizations III - Mercenaries Expansion Pack Steam Key (GLOBAL)
Windows
4w ago
DRM:
Steam
CJS-CDKeys
£9.09 £4.49
-50%

About Galactic Civilizations III - Mercenaries Expansion Pack

Galactic Civilizations III - Mercenaries Expansion Pack - about the game

Galactic Civilizations III Mercenaries Expansion Pack is a turn-based 4X strategy and simulation title for PC that expands the core experience with mercenary hiring systems, two new playable factions, and a dedicated campaign. Players manage interstellar civilizations through exploration, resource development, technological research, and conflict resolution while incorporating hired agents to handle specific tasks.

Gameplay

The central addition revolves around discovering hidden Galactic Bazaars scattered across star systems. Once located, these establishments present lists of available mercenaries, each equipped with a distinct ship and specialized capabilities. Some mercenaries focus on planetary improvements by enhancing economic output, technological progress, or construction speed. Others handle direct combat against hostile forces or exploration of anomalies that would otherwise require risking player-controlled vessels.

Ship customization receives dozens of new parts that integrate into the existing editor, allowing greater variety in hull design, weaponry, and support modules. The two new factions introduce unique racial traits, abilities, and dedicated technology trees. The Arceans represent an ancient warrior civilization with longstanding opposition to the Drengin Empire, while the Torians are an aquatic species seeking liberation from Drengin control. These elements layer onto standard 4X loops of colonization, diplomacy, and fleet management without replacing core systems.

Game Modes

The expansion introduces a focused single-player campaign that places players in command of the Torians. The narrative follows their efforts to break free from Drengin oppression by recruiting mercenaries and rebuilding infrastructure from a weakened starting position. This campaign integrates the new bazaar mechanics directly into mission objectives and progression.

Beyond the campaign, the mercenary and faction content applies across standard play sessions. Players encounter bazaars during galaxy exploration and can deploy hired agents in any scenario that involves planetary development or anomaly investigation. Ship part additions and tech tree expansions remain available regardless of chosen starting race or victory condition.

New Factions and Campaign Details

The Arceans bring honorable warrior traditions and specialized bonuses suited to aggressive expansion and defense against Drengin incursions. Their tech tree emphasizes military advancements and long-term strategic positioning. The Torians center on themes of resilience and adaptation, with abilities that support recovery from early setbacks and aquatic-themed planetary bonuses.

The campaign storyline emphasizes gradual empire reconstruction. Early objectives involve securing initial mercenary contracts to stabilize resource production and defend against raids. Later stages shift toward larger-scale operations that leverage hired combat specialists for key engagements while the player civilization focuses on broader technological and diplomatic growth.

Is It Worth Playing?

This expansion suits players already invested in Galactic Civilizations III who seek additional variety through mercenary agents and the two new civilizations. The campaign provides a structured entry point for those interested in the Torian liberation arc, while the bazaar system adds tactical options for handling anomalies and planetary upgrades without direct player intervention. Reception has been mixed, with some critics noting that the mercenary mechanics alter traditional ship acquisition flows in ways that feel inconsistent with prior entries. The content remains available as legacy DLC with no ongoing seasonal updates or balance patches specific to the expansion itself. Those who enjoy detailed 4X simulation with opportunities for delegation and faction-specific playstyles will find the most value here.

Interface:
GermanEnglishFrenchRussian
Audio:
English
Subtitles:
GermanFrenchRussian
Metacritic:
81 7.0
Steam:
Mixed (50)

Minimum:

  • 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
  • Storage: 12 GB available space
  • Additional Notes: Broadband Internet connection; DirectX Compatible Sound Card

Recommended:

  • Processor: 2.3 GHz Intel Core i5 Processor or Equivalent
  • Memory: 6 GB RAM
  • Graphics: 1 GB DirectX 10.1 Video Card
  • DirectX: Version 10
  • Storage: 15 GB available space
  • Additional Notes: Broadband Internet connection; DirectX Compatible Sound Card
Historical low
Price history from official stores
£2.89
Steam
1 years ago
Price history from keyshops
£1.56
Difmark
1 months ago
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FAQ

9 questions

Before you start looking for a cheap Galactic Civilizations III - Mercenaries Expansion Pack PC key, check the essentials. PC released date: 18 Feb 2016. Genres: Strategy, Indie, Simulation. Categories: Multi-player, PvP, Online PvP, Family Sharing, Co-op, Steam Trading Cards, Steam Workshop, Single-player, Downloadable Content, Stats, Steam Achievements, Online Co-op. Age rating: PEGI 12.

Q

Where to buy a cheap Galactic Civilizations III - Mercenaries Expansion Pack Steam key or CD key?

Using our price comparison and verified discount codes, you can buy a Galactic Civilizations III - Mercenaries Expansion Pack key for as low as £3.10. This deal is available at Difmark and is among the cheapest offers on the market. All keys listed on XD.deals are delivered digitally and eligible for instant download after payment. Prices already include processing fees and applied promo codes, so you always see the lowest Galactic Civilizations III - Mercenaries Expansion Pack price on PC. Check the Galactic Civilizations III - Mercenaries Expansion Pack price history to buy at the best moment.

As of our last update (we refresh Steam pricing multiple times a day), the Galactic Civilizations III - Mercenaries Expansion Pack Steam price is £9.09. You can save an extra ~6% by paying with a discounted Steam gift card.

Our price tracker covers both official retailers and key marketplaces, so you can find Galactic Civilizations III - Mercenaries Expansion Pack on sale even outside seasonal promotions. We currently detect 16 active offers from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.

Based on our data, Galactic Civilizations III - Mercenaries Expansion Pack is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

The cheapest offer came most often from Eneba: 78 of 185 days with data. We have recorded offers from 15 stores in total, and from 5 in the most recent reading. The price reached its historical low on only 1 day out of 185 days with data. On days when both store types carried the game, the keyshop was cheaper by a median of 51%.

Yes. Galactic Civilizations III - Mercenaries Expansion Pack has an official page on the Steam Store. You can also buy a Galactic Civilizations III - Mercenaries Expansion Pack Steam key from third-party sellers. Our price comparison currently includes 16 offers with Steam DRM. Pick one to ensure your Galactic Civilizations III - Mercenaries Expansion Pack download happens on Valve's platform.

Not at this time. Valve marks Galactic Civilizations III - Mercenaries Expansion Pack as Unsupported on Steam Deck. Keep an eye on XD.deals - we track Proton updates and community fixes. Browse games that are Steam Deck Verified or Steam Deck Playable.

According to our data Galactic Civilizations III - Mercenaries Expansion Pack is not currently available on PC Game Pass, EA Play or Ubisoft+. We are still filling in the catalogues of these services, so it is worth confirming the status at the source before you decide. If you are buying, XD.deals will help you find the lowest price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best Galactic Civilizations III - Mercenaries Expansion Pack deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.

Best prices for Galactic Civilizations III - Mercenaries Expansion Pack

1 Difmark Difmark Keyshop
-65% £3.10
2 Eneba Eneba Keyshop
-60% £3.43
3 Gameseal Gameseal Keyshop
-62% £3.44
4 G2Play G2Play Keyshop
-57% £3.77
5 Kinguin Kinguin Keyshop
-57% £3.77

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