Sid Meier's Alpha Centauri™ Planetary Pack on Steam - User reviews, Price & Information
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Sid Meier's Alpha Centauri™ Planetary Pack includes the original Alpha Centauri and the expansion, Alien Crossfire.
Sid Meier's Alpha Centauri™ Planetary Pack is a strategy, 4x and multiplayer game
developed by Firaxis Games
and published by Electronic Arts.
Released on March 07th 2024 is available in English only on Windows.
It has received 461 reviews of which 423 were positive and 38 were negative resulting in a rating of 8.5 out of 10. 😎
The game is currently priced at 2.49€ on Steam with a 50% discount.
The Steam community has classified Sid Meier's Alpha Centauri™ Planetary Pack into these genres:
Media & Screenshots
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System requirements
These are the minimum specifications needed to play the game. For the best experience, we recommend that you verify them.
Windows
- 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
User reviews & Ratings
Explore reviews from Steam users sharing their experiences and what they love about the game.
I’ve been playing 4X games since first or second grade, when a friend introduced me to the original Civilization. Between Civilization and Civilization II, I must have sunk hundreds of hours into conquering, optimizing, and reshaping the world. My favorite victory was always the science victory—launching a spaceship to Alpha Centauri—but it also came with a frustration: the game ended just as things felt like they were really beginning. When Sid Meier’s Alpha Centauri released in 1999, it finally delivered on that promise. Unlike Civilization: Call to Power, which came out the same year and largely stuck to the classic Civ formula, Alpha Centauri fully committed to the question of what comes after Earth. Where Call to Power experimented with new ideas that never quite clicked for me, SMAC doubled down on deep systems, long-term planning, and obsessive optimization—and did it with confidence. Terraforming in Alpha Centauri remains unmatched. You can raise and lower terrain, drill for aquifers to create rivers, plant forests or alien flora, and even manipulate rainfall and elevation to squeeze out every last unit of nutrients or energy. Planet doesn’t just feel occupied—it feels engineered over centuries. Another major strength is the game’s tighter timeline. By focusing almost entirely on the space age and beyond, SMAC avoids many of the coherence problems that plague 4X games spanning thousands of years. Mechanics stay relevant, systems don’t need constant reinvention, and the experience feels remarkably consistent from start to finish. The Social Engineering system was also far ahead of its time. By setting policies across Politics, Economy, Values, and Future Society, you effectively design the ideological backbone of your civilization. These choices meaningfully affect everything—economy, research, diplomacy, and warfare—and allow for wildly different playstyles. It’s hard not to enjoy the fantasy of trying to build a “perfect” society, even knowing the trade-offs will eventually catch up with you. Then there’s the Workshop. Designing your own units—choosing chassis, weapons, armor, and special abilities—added a level of customization I still haven’t seen properly replicated. You could automate it if you wanted, but for players who enjoy that depth, it was (and still is) incredibly satisfying. By modern standards, the graphics are undeniably dated, and there are technical issues today. The Alien Crossfire expansion currently fails to launch on Steam due to a recent Windows update (though the base game still works, and the expansion may function on GOG). Even so, SMAC has lost none of its pull. I still return to it regularly, and the “just one more turn” feeling is very much alive. A kind of spiritual successor, Civilization: Beyond Earth, arrived in 2014. It’s competent and far better-looking, but it never captured the same magic. The depth of terraforming and social engineering simply isn’t there—even fifteen years later. More than two decades on, Sid Meier’s Alpha Centauri remains an extraordinary game. In my view, it’s not only the best Sid Meier title, but one that still outshines later entries in the Civilization series—including Civilization VI. It represents the genre at its most ambitious, uncompromising, and inspired. For a longer, more detailed version of this review, see my blog post here: https://hmpublishing.blogspot.com/2026/01/sid-meiers-alpha-centauri-still-high.html
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Whatever hours you see that I have on steam by the time you read this is a fraction of the time I've spent in this game. I owned it back when it was new. I bought crossfire. The mind worms have long since captured me. I am one with planet now. Join me. (Seriously - this is one of the best 4X games out there. Period.)
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Favourite game of all times. Perfect fusion of diametrically opposite world philosophies tumbled together on a new, hostile planet. No other game will touch Your soul as this one, besides Deus Ex, but even that pales in comparison. I'm surprised steam updated the ini file. The only difference between this and gog's version is the recent implemention of a mod (personal preference). Linux wise (Debian 12 xfce), the sound problem is still persistent, but everything else works out of the box (fullscreen, no missing cursor, no intro video cut off, no save & reload after every secret project playing). I take it the steam version would work flawlessly on w10, because gog one does. It's time for planet busters and nerve stapling:) "In one moment, Earth; in the next, Heaven."; "The wicked have told me of things that delight them, but not such things as your law has to tell."- St. Augustine We must dissent)) P.S. Don't forget to read the prologue to the story + the trilogy (pdfs were available on archive), it's fun EDIT: regarding Windows 11, theres a problem when firing up the Alien Crossfire. As of sept 2025., there are only two ways of having it fixed. You can either download a mod or patch the exe file (terranx) via the little program made by a youtuber Nathan Baggs (adamite on github). If you choose the latter, an additional exe file will popup, terranx_nb.
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This is the original Sid Meier's Alpha Centauri, with updated graphics and support for modern PCs. In my opinion, SMAC is a cornerstone of 4x games and it is a genre-defining experience, even more so than Civilization. The factions are all unique and differentiate themselves very well, and the Secret Projects and Research have extremely memorable quotes. The only negative thing I have to say about this game is that the Alien Crossfire expansion, which is included with this purchase, does not work as of the latest patch.
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The best Sid Meier's game by a long shot, long overdue for a remake
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Frequently Asked Questions
Sid Meier's Alpha Centauri™ Planetary Pack is currently priced at 2.49€ on Steam.
Sid Meier's Alpha Centauri™ Planetary Pack is currently available at a 50% discount. You can purchase it for 2.49€ on Steam.
Sid Meier's Alpha Centauri™ Planetary Pack received 423 positive votes out of a total of 461 achieving a rating of 8.52.
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Sid Meier's Alpha Centauri™ Planetary Pack was developed by Firaxis Games and published by Electronic Arts.
Sid Meier's Alpha Centauri™ Planetary Pack is playable and fully supported on Windows.
Sid Meier's Alpha Centauri™ Planetary Pack is not playable on MacOS.
Sid Meier's Alpha Centauri™ Planetary Pack is not playable on Linux.
Sid Meier's Alpha Centauri™ Planetary Pack offers both single-player and multi-player modes.
Sid Meier's Alpha Centauri™ Planetary Pack offers both Co-op and PvP modes.
Sid Meier's Alpha Centauri™ Planetary Pack does not currently offer any DLC.
Sid Meier's Alpha Centauri™ Planetary Pack does not support mods via Steam Workshop.
Sid Meier's Alpha Centauri™ Planetary Pack does not support Steam Remote Play.
Sid Meier's Alpha Centauri™ Planetary Pack is enabled for Steam Family Sharing. This means you can share the game with authorized users from your Steam Library, allowing them to play it on their own accounts. For more details on how the feature works, you can read the original Steam Family Sharing announcement or visit the Steam Family Sharing user guide and FAQ page.
You can find solutions or submit a support ticket by visiting the Steam Support page for Sid Meier's Alpha Centauri™ Planetary Pack.
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Additionally, we incorporate data from the SteamSpy API, which offers insights into game sales and player statistics. This helps us present a comprehensive view of each game's popularity and performance within the gaming community.
Last Updates| Steam data | 10 March 2026 07:21 |
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| SteamSpy data | 14 March 2026 15:54 |
| Steam price | 15 March 2026 04:35 |
| Steam reviews | 13 March 2026 07:58 |
If you'd like to dive deeper into the details about Sid Meier's Alpha Centauri™ Planetary Pack, we invite you to check out a few dedicated websites that offer extensive information and insights. These platforms provide valuable data, analysis, and user-generated reports to enhance your understanding of the game and its performance.
- SteamDB - A comprehensive database of everything on Steam about Sid Meier's Alpha Centauri™ Planetary Pack
- SteamCharts - Analysis of Sid Meier's Alpha Centauri™ Planetary Pack concurrent players on Steam
- ProtonDB - Crowdsourced reports on Linux and Steam Deck Sid Meier's Alpha Centauri™ Planetary Pack compatibility
Game modes
Multiplayer
Features
Online players
65
Developer
Firaxis Games
Publisher
Electronic Arts
Release
07 Mar 2024
Platforms