X (video game series)

Genres Science fiction space trading and combat simulator
Developers Egosoft
Writers Helge Kautz
Platforms Linux, Mac OS X, Windows
Year of inception 1999
First release X: Beyond the Frontier,
July 1, 1999
Latest release X Rebirth
November 15, 2013

X is a science fiction space trading and combat simulator series created by German developer Egosoft. The series is set in the X-Universe where several races populate a number of worlds connected by jumpgates. The games feature free roaming gameplay with trading, combat, empire building, and missions; leading to the series' phrase: "Trade, Fight, Build, Think". The series, which was launched in 1999 on the Windows platform, consists of four base games: X: Beyond the Frontier, X2: The Threat, X3: Reunion, and X Rebirth with a new rendering engine and plot.


The fiction behind the X series is provided in the games themselves and in four novels by series fictional writer Helge Kautz: Farnham's Legend, Nopileos, Yoshiko and Hüter der Tore (The Keeper of the Gates).[1] Farnham's Legend is available in English.

Over the course of the 21st century, mankind experimented with wormhole technology and successfully built jumpgates in space between Earth and Mars paving the way for the colonization of the solar system and interstellar transport. A jumpgate was shuttled to Alpha Centauri in an attempt to claim a foothold in interstellar space. Even before the gate left the solar system scientists discovered that many objects classified as black holes showed the characteristics of artificial wormholes. There were alien jumpgates which the human constructed gates could connect to. The Terrans had discovered the X Universe, a seemingly uninhabited collection of star systems connected by a vast network of large, bi-directional jump gates.

Puzzled by the lack of intelligent life within this network but driven by their curiosity and the urge to colonise the new worlds the Terrans ventured into the X Universe intent on expanding their territory. Terraforming machines were created and dispatched to terraform planets into habitable worlds. The Terraformers were self-replicating spacecraft, governed by a simple artificial intelligence. During a software update several flaws were introduced into the Terraformer fleet and distributed between them causing a radical change in behaviour. The Terraformers replicated and attempted to re-terraform colonised planets, causing the planets to lose their ability to support human life. In an attempt to halt the Terraformers the Terrans became embroiled in a war with their creations. No colony was able to defend against the attacks and mankind was pushed back to the Sol System where the Terraformers launched an attempt to destroy all life forms and terraform all of the inner planets.

In a daring attempt to save the solar system, a group of ships, led by Nathan R. Gunne, lured the Terraformers through the gate into the X Universe. The Earth gate was then destroyed, trapping the Terraformers in the X-Universe and cutting Earth off from the rest of the network.

The X-series is set more than 750 years after these events.[2] A single Terraformer craft appears in the solar system using an apparently experimental gateless jumpdrive. The Terrans reverse engineer the device. In its maiden flight, the X-Shuttle, piloted by test pilot Kyle Brennan, is accidentally transported into the X Universe. Unlike before, this part of the network is inhabited by several space faring alien races and the descendants of Nathan R. Gunne's fleet. The Terraformers are attempting to get to Earth and Kyle must stop them.

The X-Universe

The fictional X-Universe is a collection of sectors connected by two-way jumpgates. The total number of sectors is unknown, but the number of "discovered" sectors has increased in each game; from 54, in X: Beyond the Frontier, to over 200 in X³: Terran Conflict, including the re-discovered Sol system.

Sectors typically orbit planets, within a star system. Most contain game resources such as asteroids of silicon or ore, and many contain inhabitable planets. Each sector contains up to four jumpgates, in a North, East, South, West pattern. Each sector is named by the organisation that controls it.

Notable sectors include: Argon Federation home-sector, "Argon Prime"; Boron Kingdom home-sector "Kingdom End", Teladi Company headquarters "Seizewell"; Split Dynasty home-sector "Family Pride"; and Paranid Empire home world "Paranid Prime". The Xenon home-sector has never been discovered.

Most sectors are controlled by one X-Universe race, and will contain only stations economically indigenous to that race. For example, Atreus' Clouds is a Boron sector, containing only Boron stations. Here the player can buy special Boron weaponry and equipment that is unavailable from other races. Boron stations sell Boron trade products, and they often want to buy the trade products of other races. Such products can be imported, exported and traded by the player for profit. This compels the player to explore the sectors of the different races to discover the most useful upgrades, and most profitable trade routes.

For convenience, most stations and facilities are located in the space between the jumpgates, known as the "ecliptic plane". However, each sector is unbounded, and the player may travel in any direction almost indefinitely. Beyond the main area of a sector is mostly empty void, though official X material, as well as in-game messages and missions hint at lost ships, secret stations, and other treasures and dangers lurking in remote areas.

In games to X²: The Threat, X-Universe sectors are of uniform size, and gates are usually centre-North, South, East and West of the ecliptic plane. In X³: Reunion sectors became much more varied. The distances between gates varies between 50 km in some sectors to over 200 km in others. The exact position of the gates is unpredictable and gates are generally harder to find.

It is not possible to fly to planets in game. Planet based activity is only possible in plot-related events of X²: The Threat and X³: Reunion. It is only possible to fly into planet atmospheres, though this will result in the ship's destruction.

It is possible that all sectors in the X-Universe are in the Milky Way. With gate technology, some sectors which are distant in the gate system could be cosmically close together. Conversely, sectors near to each other in the jumpgate grid could be physically far apart. Due to the ease of use of the jumpgate system, most races have not progressed far enough in more conventional interstellar science to be sure.

The X-Universe features several sentient species, some of which are yet to be seen in the games themselves.

The X Series

Individual games

The series, which was launched in 1999 on the Windows platform, consists of four base games: X: Beyond the Frontier, X2: The Threat, X3: Reunion, and X Rebirth with a new rendering engine and plot. The series games are expanded by sequels that both add features and extend the plot. A plot can be undertaken in all games except X-Tension where the player takes part in missions to unfold events.

A free downloadable demo version of X³: Reunion and X³: Terran Conflict can be obtained from the Egosoft website.

Name Date Released Platforms
X: Beyond the Frontier July 1, 1999 Windows
X-Tension June 1, 2000 Windows
X²: The Threat December 3, 2003 Linux, Mac OS X, Windows
X³: Reunion October 28, 2005 Linux, Mac OS X, Windows
X³: Terran Conflict October 16, 2008 Linux, Mac OS X, Windows
X³: Albion Prelude December 15, 2011 Linux, Mac OS X, Windows
X Rebirth November 15, 2013[3] [4] Linux, Windows, Mac OS X

Special editions


Farnham's Legend is a science fiction novel set in the imaginary universe created for the X series. It was written in German by Helge T. Kautz, and has been translated into English by Steve Miller and Andreas Fuchs. Published by Egosoft in 2005, it contains 349 pages.[11]

Each chapter tells the story from one character's viewpoint. The main characters in this book are:


  1. "Egosoft Shop". egosoft.com.
  2. "Timeline". Argonopedia.
  3. "X-Rebirth info". X-Rebirth official site info. Egosoft.
  4. "X Rebirth - The big picture". X-Rebirth official forum info. Egosoft.
  5. Egosoft (2009-04-03). "X3-Gold EU Info". Egosoft X-News. Egosoft. Retrieved 2009-04-25.
  6. Egosoft (2009-10-16). "X3-Gold UK & US Info". Egosoft X-News. Egosoft. Retrieved 2009-10-19.
  7. "X-SUPERBOX: What is this all about and what should it contain?". Egosoft's Forums. 2009-06-23. Retrieved 2010-08-30.
  8. "New X-BtF and X-Tension EXE files available for testing". Egosoft's Forums. 2010-05-05. Retrieved 2010-08-30.
  9. "Deep Silver and Egosoft announce X Superbox". Egosoft's Forums. 2010-08-12. Retrieved 2010-08-30.
  10. "X-Universe News Issue 47". Egosoft's Newsletter. 2011-12-15. Retrieved 2011-12-17.
  11. Amazon.com page for Farnham's Legend
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