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Sid Meier's Alien Crossfire is an expansion pack to Alpha Centauri. It adds seven new factions, two of them the aliens who left Planet before the humans arrived, new technologies, new city structures, and new units.

The two new alien races are radically different from any other human faction, right down to the unit art. The player can mix and match any seven factions from the expansion pack and the original game, but the aliens have to go together or not at all. The other four human factions include a seafaring race, and an even more zealous environmental race then the original Gaians.

There is also a handy Faction Editing tool included, for all your editing needs!


Sid Meier's Alien Crossfire Windows Building up your empire
Sid Meier's Alien Crossfire Windows Bossing your troops around
Sid Meier's Alien Crossfire Windows In space, no one can hear you quit
Sid Meier's Alien Crossfire Windows So many factions, so little time

Promo Images

There are no promo images for this game

Alternate Titles

  • "SMACX" -- Common abbreviation
  • "Sid Meier's Alpha Centauri: Alien Crossfire" -- European title

Part of the Following Groups

User Reviews

Must have? Don't think so. Windows Technocrat (201)
I will officially THUMP the idiot programmer who did the custom map programming Windows Indra is stressed (20754)

Critic Reviews

ESC Magazine Windows Nov 15, 1999 10 out of 10 100
Inside Mac Games (IMG) Macintosh Sep 18, 2000 9 out of 10 90
macHOME Macintosh 2000 4.5 Stars4.5 Stars4.5 Stars4.5 Stars4.5 Stars 90
GameStar (Germany) Windows Dec, 1999 88 out of 100 88
PC Games (Germany) Windows Mar 07, 2001 85 out of 100 85
Gamer's Pulse Windows 2000 85 out of 100 85
Power Play Windows Dec, 1999 85 out of 100 85
GameSpot Windows Nov 24, 1999 8.3 out of 10 83
PC Player (Germany) Windows Dec, 1999 80 out of 100 80
Mac Addict Macintosh Sep, 2000 3 Stars3 Stars3 Stars3 Stars3 Stars 60


Topic # Posts Last Post
April 2010 Game of the Month: "Jihad" 1 bdanv
May 19, 2010


There is no trivia on file for this game.

Contributed to by Dr. Elementary (299) and Zeppin (8470)