GameStrategy

Sid Meier's Alpha Centauri™ Planetary Pack

79KS

Released Mar 7, 2024by Firaxis GamesVery Positive(90% of 605 Steam reviews)Recent: 82% positive

Sid Meier's Alpha Centauri™ Planetary Pack includes the original Alpha Centauri and the expansion, Alien Crossfire.

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Lowest tracked price

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€4.99

at Steam

price checked Jul 23, 2026

Shop now ↗1 offer from 1 shopfrom €4.99

Price CheckHow it works

Cheaper than its typical Steam price — cheaper on only 12% of tracked days

Tracked since Jul 7, 2026.

Price stats

30-day Steam low: €0.99
Lowest tracked: €0.99Jul 7, 2026

Steam Train Fest ends on Jul 27

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Steam

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updated Jul 23, 2026

€4.99

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Sid Meier's Alpha Centauri™ Planetary Pack screenshot

About Sid Meier's Alpha Centauri™ Planetary Pack

Mankind begins its most monumental task: the colonization of space. A crew of internationally renowned scientists and security strategists, with wide-ranging convictions and diverse ethics, embarks on a mission that will change the world. One Planet. Seven unique factions. Which will you lead? Each faction has its own agenda, each leader a final goal. You must play to each strength and exploit each hidden weakness in your quest to rule the future.

Key features:

Great spin-off of the legendary Civilization series, in a refreshing sci-fi setting
Design your own units. Balance their speed, power, and toughness to suit your current tactical needs
Seven factions to chose from, each with its own artificial intelligence model that creates a very suggestive feeling that you’re up against real people

Game details

Released

Developer

Publisher

Platforms

Steam Deck

Playable

Steam rating

Very Positive (90%)

Age ratings

PEGI 7USK 6FPB 13CSRR P6

Sid Meier's Alpha Centauri™ Planetary Pack price history

Lowest tracked price: €0.99 (Jul 7, 2026) · current best: €4.99.

Sid Meier's Alpha Centauri™ Planetary Pack player count & reviews

83% positive reviews in the last 30 days (90% all-time) · 74 peak players in the last 30 days.

Sid Meier's Alpha Centauri™ Planetary Pack — frequently asked questions

Where can I buy Sid Meier's Alpha Centauri™ Planetary Pack at the cheapest price?

Right now the cheapest offer for Sid Meier's Alpha Centauri™ Planetary Pack is €4.99 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.

What is the lowest price Sid Meier's Alpha Centauri™ Planetary Pack has ever been?

The lowest price KingsPrice has tracked for Sid Meier's Alpha Centauri™ Planetary Pack is €0.99 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.

How many people play Sid Meier's Alpha Centauri™ Planetary Pack?

Sid Meier's Alpha Centauri™ Planetary Pack peaked at 74 concurrent players on Steam in the last 30 days (highest on Jul 12, 2026). The player chart on this page updates daily.

How can I get Sid Meier's Alpha Centauri™ Planetary Pack at a discount?

Create a free price alert on this page and KingsPrice will email you when Sid Meier's Alpha Centauri™ Planetary Pack drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.

System requirements

Minimum

Minimum:

OS *: Windows XP / Vista / 7 / 8 / 10
Processor: 1.8 GHz
Memory: 512 MB RAM
Graphics: 3D graphics card compatible with DirectX 9.0c
DirectX: Version 9.0c
Storage: 600 MB available space
Additional Notes: Requires a monitor that supports a minimum resolution of 800x600