Sid Meier's Alien Crossfire cover art

Sid Meier series

Sid Meier's Alien Crossfire

The Official Expansion Pack for Sid Meier's Alpha Centauri.

20 October 1999

Sid Meier's Alien Crossfire is a strategy developed by Firaxis Games, released 20 October 1999 on Mac and PC (Microsoft Windows).

Verified Sources: IGDB

What Sid Meier's Alien Crossfire is

Sid Meier's Alien Crossfire is a strategy game developed by Firaxis Games and released in 1999. It was published by Aspyr Media. It is available on Mac and PC (Microsoft Windows).

How it plays

It is played from a bird view / isometric perspective. Its themes are 4x (explore, expand, exploit, and exterminate) and science fiction. It is a single-player game with no multiplayer component. Available modes: Multiplayer and Single player.

Where it sits in the Sid Meier series

Sid Meier's Alien Crossfire is the fifth of 41 entries we hold in the Sid Meier series. It arrived 8 months after Sid Meier's Alpha Centauri. The next entry was Sid Meier's Antietam! in 1999.

See all 41 Sid Meier games in release order →

What it launched against

Sid Meier's Alien Crossfire launched on 20 October 1999, within three weeks of Age of Empires II: The Age of Kings, Rayman 2: The Great Escape, Grand Theft Auto 2 and Thief Gold.

Released around the same time: Age of Empires II: The Age of Kings, Rayman 2: The Great Escape, Grand Theft Auto 2, Thief Gold.

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Quick answers

Sid Meier's Alien Crossfire — frequently asked questions

When did Sid Meier's Alien Crossfire come out?
Sid Meier's Alien Crossfire was released on 20 October 1999 for Mac and PC (Microsoft Windows).

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