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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 Politics are so boring
Sid Meier's Alien Crossfire Windows It's so crowded in here
Sid Meier's Alien Crossfire Windows Bossing your troops around
Sid Meier's Alien Crossfire Windows Ohhh, shiny

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. Technocrat (201) unrated
I will officially THUMP the idiot programmer who did the custom map programming Indra is stressed (20754) 3.71 Stars3.71 Stars3.71 Stars3.71 Stars3.71 Stars

Critic Reviews

ESC Magazine Nov 15, 1999 10 out of 10 100
GamePro (US) Jan 01, 2000 4.5 out of 5 90
GameStar (Germany) Dec, 1999 88 out of 100 88
RealGamer (Benelux) Jan, 2000 8.5 out of 10 85
PC Games (Germany) Mar 07, 2001 85 out of 100 85
Power Play Dec, 1999 85 out of 100 85
Gamer's Pulse 2000 85 out of 100 85
GameSpot Nov 24, 1999 8.3 out of 10 83
PC Player (Germany) Dec, 1999 80 out of 100 80
Computer Gaming World (CGW) Jan, 2000 4 Stars4 Stars4 Stars4 Stars4 Stars 80


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.

Dr. Elementary (299) added Sid Meier's Alien Crossfire (Windows) on Aug 25, 2000
Other platforms contributed by Zeppin (8470)