Game2024

Sid Meier's Alpha Centauri™ Planetary Pack

Strategy

Developer Firaxis Games

Sid Meier's Alpha Centauri is a 4X video game, considered a spiritual sequel to the Civilization series. Set in a science fiction depiction of the 22nd century, the game begins as seven competing ideological factions land on the planet Chiron ("Planet") in the Alpha Centauri star system. As the game progresses, Planet's growing sentience becomes a formidable obstacle to the human colonists. Sid Meier, designer of… From Wikipedia (CC BY-SA 4.0)

189 reactions from 1 source (Steam reviews) · newest Sep 30, 2026 · last updated Oct 8, 2026 · How this works

Audience score

85
LovedLoved

160 positive · 29 negative
95% range 79–89%

Source+−=
Steam reviews160290
Steam's own rating
Very Positive
560 of 620 reviews positive (all languages, per Valve)

What people are saying

Summary pending — the reactions are listed below.

Reactions

60 of 189 · most liked first
  • Steam user Steam user …3565Steam reviews · Mar 20, 2026

    I love this game, but it won't run on my windows 11 PC. Therefore I cannot reccommend until fixed. Games shouldn't be allowed to be sold here if they aren't current enough to run on the current hardware/software. Edit: Just to be clear, I have this on GOG too and it's also not working there. This is a real problem and seems to be affecting everyone Edit2: Yes i've tried running in compatibility mode both here and the GOG version (i own both) neither work. To be clear, this is one of my…

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …1568Steam reviews · Mar 3, 2026 · 1 h played

    I’ve been playing this game on and off since 1999, and honestly, nothing else comes close. I still remember the first time I heard Chairman Yang’s voice talking about "Recycling Tanks" as a kid and thinking it was just a cool building, only to realize years later as an adult the horrific implications of "every citizen's final duty." That is the magic of SMAC; it’s a strategy game with a soul that is simultaneously brilliant and dark. Unlike Civilization, which feels like a big high-five to…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …8050Steam reviews · Apr 28, 2026 · 12 h played

    "I sit in my cubicle, here on the mother world. When I die, they will put my body in a box and dispose of it in the cold ground. And in the million ages to come, I will never breathe, or laugh, or twitch again. So won't you run and play with me here among the teeming mass of humanity? The universe has spared us this moment." Sid Meier’s Alpha Centauri is not merely a strategy game about colonizing an alien world, it is a philosophical argument disguised as a 4X game. Where Civilization asks…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …7857Steam reviews · Jan 20, 2026 · 1 h played

    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…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …8489Steam reviews · Feb 13, 2025 · 22 h played

    It's 2025 and this game is still a 10/10. While I have yet to afford Civ VII, in my opinion: this Sid Meiers turn based game is better than any of the modern Civ games that came after it. Every time I play a Civ game, I get the itch to play Alpha Centauri. Returning players and new players should keep in mind that this game was released in 1999. It doesn't handle some things as gracefully as you have come to expect from other Civ games. But it does not fall short of in-game content,…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …6367Steam reviews · Oct 30, 2025

    Sadly despite the misleading 2024 release date, this just crashes immediately on planetfall (alien crossfire). Why bother doing a fake rerelease if you won't even fix it to work. Shame on you Firaxis.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …1317Steam reviews · Feb 26, 2025

    warning!! as of february 26th alien crossfire is not working with windows 11, would refund but it was past the 14 days.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …1009Steam reviews · Feb 16, 2025 · 2 h played

    hey unfortunately Alien crossfire does not work on purchase. ive seen a few people say you have to install a bunch of mods and roll back a windows update to get it working correctly but honestly, i paid $7.90 for this which isnt much, but i expect anything i pay for to work right out of the box. If you just want to play the base game purchase it, but as of the writing of this review Alien Crossfire does not work, you get to the faction select screen, hit play and as soon as you name your first…

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …0422Steam reviews · Nov 2, 2025 · 59 h played

    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.)

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …9312Steam reviews · Aug 25, 2025 · 10 h played

    The best Sid Meier's game by a long shot, long overdue for a remake

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …5437Steam reviews · Aug 9, 2025 · 1 h played

    crossfire is broken won't run on windows I believe as of last update.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …6565Steam reviews · Dec 22, 2025 · 3 h played

    Alpha Centauri is one of my all time best games. I got it on a whim on steam, and worked fine for about a week. However, as of the latest Win11 update it crashes on starting a game. Ill update this review when I can get it working.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …9949Steam reviews · Jun 11, 2026 · 5 h played

    On windows 11 crashes, was not able to run. tried different things like patches, admin mode, compatibility. Nothing helped.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …7888Steam reviews · May 2, 2025 · 10 h played

    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…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …9061Steam reviews · Mar 19, 2026

    "Beware of he who would deny you access to information, for in his heart he dreams himself your master."

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …4936Steam reviews · Jan 17, 2026 · 2 h played

    Crashes on startup. The GOG version works perfectly.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …9724Steam reviews · Jun 17, 2026 · 117 h played

    This game is the best of the Civilization series. I bought it when first released in 1999. I've played some of the later Civ games, but they just didn't compare. SMAC is the most brilliant 4x game ever made. Back in 1999, players complained about how complicated the Design Workshop was. The Design Workshop allows you to build units by selecting various components that you've already learned. It's optional - the game will automatically design basic units for you. If you want to make those…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …3964Steam reviews · Feb 23, 2025 · 1 h played

    This is a great game from the past. It just doesn't work right on modern machines. you'd think windows 11 would help?! O'well, maybe I'll try for a refund.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …5109Steam reviews · Sep 17, 2025 · 186 h played

    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…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …5217Steam reviews · Apr 29, 2026

    Game crashes to desktop immediately on planetfall and naming your first colony. Discussions suggest this is a Windows 11 issue and can be solved with a mod - I shouldn't have to download mods to make the game run on the most popular desktop operating system.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …7784Steam reviews · Apr 25, 2026

    The best Civ game ever made. Play as Deirdre so you can kill everyone with MIND WORMS and listen to spooky new age music. She's also very easy to look at. Apart from being a sci-fi game with its own special rules, units, tech tree, and so on, it's from the Civ 3 era, and gameplay nuts & bolts feel similar to that game from one moment to the next. But between the atmosphere and all the future lore we get instead of Earth history, the experience is very different. If you can get into it, a long…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …3619Steam reviews · May 22, 2025

    This was a beloved classic of my childhood, but be aware that the version being sold on Steam doesn't seem to work on modern Windows. It will crash randomly within a few minutes of starting a game. I've tried various suggestions online around compatibility modes and patches, but I haven't been able to resolve this. Alien Crossfire has an even odder bug where the game will start with no initial city, and you can't do anything. Thankfully I didn't spend much on this, but if a game is being…

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …3385Steam reviews · Jan 26, 2025 · 8 h played

    One of my two favourites (Civ3 is the other). So many hours played on different computers-no subscriptions, the whole game there from Day1.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …0724Steam reviews · Jul 13, 2026 · 1 h played

    This was my favorite game when it came out. It finally showed up on Steam. I prefer to play the Alien Crossfire version. BUT... on Windows 11, IT WILL CRASH as soon as the first autosave happens! This is a program bug in the game itself, not Steam's fault. There is a patch that fixes it: Adamite.exe is a program written by Nathan Baggs. Find it on www.nexusmods.com. This patch fixes the program error in SMAX that causes it to crash in Windows 11 (not previous windows versions or…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …5274Steam reviews · Jun 1, 2026 · 17 h played

    Alien Crossfire is broken. A Windows update killed it. It'll good to play again when someone gets a fix to Steam for Steam system download. I'm getting mix of either a "virtual memory crash" or when the first base starts (image for the base won't show and clicking on the screen will crash the game). Other people get a variety of issues/crashes after the Windows ?24H2? update Hopefully, an update via Steam will become available to fix the problems everyone is encountering, with Alien…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …2756Steam reviews · Sep 2, 2025 · 6 h played

    I'm 41 years old and played this game for the first time way back in 1999. I STILL play through it at least a couple times a year to this day. If I had to make a list of the best games of all time, this easily hits my top 3 personally. Enjoy!

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …7172Steam reviews · Jun 22, 2025 · 7 h played

    Love this game. It was far ahead of it's time with smart aggressive AI and the most amazing tech tree I've ever seen. I'd love to see this game updated. Long overdue!

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …6765Steam reviews · Dec 7, 2025

    Got the same problem as many others: Alien Crossfire crashes when making planetfall.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …0260Steam reviews · Sep 26, 2025 · 6 h played

    Crossfire is broken on Windows 11, the Thinker mod on Github got it working again. Did try the open source version but that didn't seem to have gotten very far.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …5036Steam reviews · Jun 9, 2025 · 82 h played

    The best civ game

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …9672Steam reviews · Dec 24, 2024 · 24 h played

    “Resources exist to be consumed. And consumed they will be, if not by this generation then by some future. By what right does this forgotten future seek to deny us our birthright? None I say! Let us take what is ours, chew and eat our fill.” CEO Nwabudike Morgan, “The Ethics of Greed”

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …6643Steam reviews · Apr 24, 2026 · 1 h played

    This '99 strategy game is scary. From the point of all newer games of its kind, I mean. Years pass but very few are this competent chess partners. (I have the Steam version for just practical reasons. My playing hours here in the stats is irrelevant as I've been playing this one for 25 years or so.)

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …5376Steam reviews · Apr 24, 2026

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

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …3936Steam reviews · Apr 21, 2026 · 9 h played

    Endless replayability and educational. Still one of my favourite RTS games of all time.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …0285Steam reviews · Feb 15, 2026 · 24 h played

    secretly the best civilization game, and certainly one of the all-time greatest 4x games. i've loved it since 1999 and i still love playing it. alpha centauri has what modern civ and its pretenders lack - actual FLAVOR and PERSONALITY, not to mention a pretense of thinking critically about its speculative future that still resonates. the mechanics are a bit crusty and the ux is very much of its time, but the game still holds up if you give it a chance - and maybe read the manual. the steam…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …7968Steam reviews · Nov 26, 2025 · 108 h played

    alien crossfire does not run properly and crashes before you start turn 1

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …3008Steam reviews · Aug 19, 2025 · 19 h played

    Best of the Civ-likes by a league. Factions with distinct personalities, art, and voice acting, secret project (wonder) videos, many from Baraka, infinitely customizable units, and more aggressive AI on harder difficulty levels rather than mechanical advantages. I finish 90% of my SMAC games compared to probably 10% of any Civ game. The planetary threat, continued discovery and unit/facility evolution, and terraforming keep you busy into the late game. Highly recommended.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …7041Steam reviews · Jun 29, 2025 · 6 h played

    This is the premier Civ in space, the game is as good as it ever was! (not as hot on the expansion) This game deserves a modern sequal or refresh. 25 years ago I got the demo and played the first 100 rounds. I started at 6 pm, then next time I looked at the clock it was 1 am. I have no idea where the time went. It was amazing. I reinstalled and played it today, lost 4 hours to winning my first play in at least 15 years. for 3 dollars on steam sale? this is worth every penny!

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …2303Steam reviews · Jul 3, 2026

    (Note: if you're on Windows 11, you can use the Baggs patch to fix the game crashing if EA hasn't fixed it yet. https://github.com/nathan-baggs/Adamite ) I know Steam says I have next to no hours. It's not counting the hundreds of hours I had on the original copy I bought when I was in high school. The hundreds, if not thousands more hours I played in college once I finally got my hands on Alien Crossfire. I have bought this game four times now. I own a DRM free digital copy and I still spent…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …0875Steam reviews · Dec 21, 2025 · 6 h played

    Do NOT buy this - Alien Crossfire does NOT work since a Windows 11 update!

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …0014Steam reviews · Feb 16, 2025 · 160 h played

    Just bought and played this again in 2024, and had just as much fun as I did twenty five years ago. The game definitely shows its age in the graphics, awkward UI, limited game features, and more. But the overall game design just works in ways that is rare for 4X developers to nail. I believe part of its success is the unforgettable factions. Rather than creating dozens of cookie cutter characters with only minor variations in their stats, Alpha Centauri went with a small group of factions,…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …7071Steam reviews · Feb 3, 2025 · 107 h played

    i actually played this game right after it came out in the 90's or early 2000's, loved playing it back then and still do today but it's kind of boring after you beat it several times but it does get challenging the further up the difficulty chart of course though. I've beaten the 2nd level which was very easy even after 20 years or so. now I'm going to try the third level again, if I remember correctly I actually beat the game on all 5 difficulty levels the first time i had this game and now I…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …2672Steam reviews · Jun 3, 2026 · 514 h played

    the best video game ever made

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …2015Steam reviews · May 12, 2026 · 1 h played

    Please pay no account to the number of hours played. I have played this game for thousands of hours on other platforms. I have beaten the game as every faction on Transcend - the highest level - at least three times. I think I've also beaten the game on Transcend level as all seven factions from the Alien Crossfire expansion. The reason I bought this version and the reason it's a major disappointment was that I as hoping it would fix the bug that the game crashes at launch with Alien…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …6186Steam reviews · Mar 29, 2026 · 15 h played

    played this game for hours on end as a kid, revisit it constantly. nothing quite satisfies like it. i cannot beg friends enough to play it with me but have yet to scrounge a multiplayer game. maybe some day

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …5118Steam reviews · Mar 13, 2026

    Finding Sid Meier's Alpha Centauri on Steam was an instant nostalgia hit for me. I spent so many happy hours playing this back in the 90s, and jumping back into it felt like reconnecting with an old favorite. The atmosphere, factions, and storytelling still hold up surprisingly well. If you enjoy turn-based strategy and thoughtful world-building, this game is absolutely worth playing. It’s one of those classics that reminds you why the genre became so addictive in the first place. Definitely…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …0869Steam reviews · Oct 15, 2025 · 6 h played

    This is the best RTS I've ever played. Sure I do love galactic battlegrounds, starcraft, aoe, warcraft, but none of these games get even remotely close to the "amazeness" of Alpha Centauri. What an absolute legendary gem. I don't even know where to begin. If you gave unlimited money to a developer with a dream this is what I imagine would become of his project. It's just perfect on so many levels, I can't even describe how much I love this. Please buy this and play it, if you love RTS…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …8698Steam reviews · Mar 6, 2026

    Important: Install some overhaul mode like Thinker for example and don't play it as is on Steam. It's legendary game indeed, but it aged like milk, especially on UI and graphical compatibility front. Other then that, there is not much to say. If you came to this page you probably already know what are you looking for. Just one advice, give yourself time to read the story and text in this game. This is one of the impressive example of good game writing. The dystopian horror of day to day…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …7187Steam reviews · Sep 21, 2025 · 2 h played

    I've though about this game off and on since I first played it on a demo disk in 1999, safe to say I am obsessed. The controls and UX are definitely circa 1999 and clunky as all hell but there is so much going on both openly and under the hood that it remains an impressive game nonetheless. By far the best story I have ever encountered in a 4x game, which, to be fair, is a low bar, but SMAC absolutely blows all others out of the water. Modern Civilization games wish their leaders had this much…

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …4582Steam reviews · May 2, 2025 · 1219 h played

    infinite choices

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …7705Steam reviews · Mar 29, 2025 · 24 h played

    *****TO PLAY CROSSFIRE***** Go to your steam common folder, find Terran.exe and TerranX.exe. Make a desktop shortcut for TerranX, this is the expanded version. As clunky and hard to understand fully as it is difficult, great game even a quarter century later. Just remember the adage of, "Losing is fun!" and you'll come to like it.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …1391Steam reviews · Dec 31, 2024 · 18 h played

    The best 4X ever made. Play regular version before playing the expansion tho, for the best storytelling experience.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …4521Steam reviews · Aug 18, 2026 · 46 h played

    It's a classic; I just replayed it for the first time in 24 years.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …2214Steam reviews · Jul 22, 2026 · 1030 h played

    this is an amazing game that Steam does not support. it constantly crashes, needs a ton of patches. Steam is a terrible platform that does not treat it customers well.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …7824Steam reviews · May 6, 2026 · 1 h played

    no graphics settings and everything is too small to see. Cant change it to 720p or anything to make it zoom in. Its too bad because this is an interesting game but its too unplayable as is. If it got a PS1 or SegaCD port those would of been better just because the resolution would of made it more zoomed in.

    negative · reviewer's own thumbsView post →
  • Steam user Steam user …4874Steam reviews · Mar 11, 2026 · 11 h played

    An old game but even now full of ideas and atmosphere.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …7786Steam reviews · Jan 17, 2026 · 42 h played

    Decades later, this remains one of the most well-written games of all time.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …5133Steam reviews · Jan 15, 2026 · 14 h played

    Just like the old CD/DVD that I bought years ago, great game then, great game now!

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …4730Steam reviews · Jan 14, 2026 · 51 h played

    One of my favourite Civ-type games. Great back story and interesting game play.

    positive · reviewer's own thumbsView post →
  • Steam user Steam user …1143Steam reviews · Dec 29, 2025 · 96 h played

    Simply the best. Unfortunately though some weird bugs will crop up over time that wasn't present in the original... and yes I still have my original CDs and keys! Still though, great game - recommend higher difficulties, base game versus crossfire. The AI is much more fun to play against in the base game.

    positive · reviewer's own thumbsView post →

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