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Welcome to,
Your X-COM Wiki featuring 2,068 articles and 3,420 users.
In other languages: Español, Pусский, Français, 한국어.

This site is dedicated to X-COM, a computer strategy game series introduced in 1994 by MicroProse.

This wiki contains a wealth of information including strategy, tactical tips, plus an in-depth look at how the game functions. If you love X-COM and want to contribute, please see the Community Portal. All rookies welcome!

Disclaimer: To be absolutely clear, this site is dedicated to a series of computer games and not to general conspiracy theories regarding UFOs and aliens.

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X-COM News

XCOM 2 Gameplay Video Released

XCOM 2 E3 Demo

June 16th, 2015

  • Firaxis has released the first video of XCOM 2 gameplay during the E3 2015 conference. The footage features a tactical mission where XCOM troops have to blow up an Advent target and it shows several enemies, including the Advent units of Soldier, Captain, Turret and MEC, as well as the Viper and the evolved Muton Berserker. The video also shows the new concealment/ambush mechanic, as well as a Gremlin hacking a turret and the Skyranger retrieval. It is also possible to see Officer Bradford ordering XCOM troops into action and a glimpse of the world under the alien occupation.

XCOM2 confirmed!

June 1st, 2015

  • 2K and Firaxis have confirmed today on the XCOM official website [[1]] the upcoming sequel to XCOM: Enemy Unknown. XCOM2 takes place 20 years after the events of the remake, where the aliens have taken over Earth and the remains of XCOM are waging a guerrilla war against the extraterrestrials. The game will feature new soldier classes, the return of the Snakemen along with other new aliens, procedure generated (random) maps, and will be exclusive to the PC with specific features for mod development. More features will be revealed soon on IGN [2].

May 29th, 2015

  • Two clues at the Advent website have a series of letters that when combined produce "VIGILO CONFIDO", or the motto of Enemy Unknown 2012. It seems that a new XCOM game is under development and more details should be announced later.

May 27th, 2015

  • 2K has released yesterday a link to a site that presents an alternate reality company called Advent Administration. Its contents have triggered speculation on the 2K official forums and Xcom subreddit that it is related to a new upcoming XCOM announcement. The site contains a rotating globe, pictures depicting a XCOM: Apocalypse style city, one of which seems to contain artwork already present on XCOM: Enemy Unknown, and a downloadable .pdf file uses a font called 'XCOM-Regular'. The site also appears to be under some sort of hacking by an unknown party, with its contents being replaced by phrases such as 'we are still watching'. While all of this is merely circumstantial evidence, 2K is expected to announce a major title on the next E3 Conference in 3 weeks so keep tuned for further details.

October 21st, 2014

  • Firaxis has released video footage of the two panels dedicated to XCOM: Enemy Unknown during the company's 2014 community convention, which took place last month. The panels were called Designing the Soldiers in XCOM, which was presented by Game Designer Ananda Gupta, and The Artwork of XCOM, by Art Director Greg Foertsch. The Firaxicon videos are available at Firaxis's Youtube channel.

October 16th, 2014

  • Steam announced that XCOM: Enemy Unknown can be played for free this weekend, starting today and until next Sunday. For more details check Steam's announcement.

August 5th, 2014

  • Fantasy Flight Games announced that they'll be publishing XCOM: The Board Game on the last quarter of 2014. The tabletop board game is based on XCOM: Enemy Unknown and can be played from 1-4 players, which take the individual roles of XCOM Commander, Chief Scientist, Central Officer and Squad Leader, with the help of an app companion to determine the moves of the alien forces. For more details check the publisher's page, and yes, the game comes included with plastic figures representing all soldier classes, as well as the Interceptors and UFOs. Cost is presented as $59.95 for this game and it will be available for preview at the publisher's booth on Gen Con Indy 2014.

June 13th, 2014

  • OpenXcom has just completed its release 1.0 version, available for free at If you're looking to spice up the original UFO: Enemy Unknown game, then check out this revamped open source clone version, developed by SupSuper and a bunch of X-COM enthusiasts. For more details about OpenXcom, see this presentation.

May 29th, 2014

  • Feral Interactive has announced that they will release XCOM: Enemy Unknown as their first game for Linux this summer, using the Ubuntu 14.04 version and through SteamPlay.

May 17th, 2014

  • YCOM: Enemy Unlikely - Another remake of the XCOM series, YCOM: Enemy Unlikely is a demake of XCOM: Enemy Unknown, with a bit of hilarity added. The video contains a link on its description to download and play the game.

April 29th, 2014

  • X@COM - playable alpha demo. X@COM, or XCOM Rogue-like, is a current fan project that aims to replicate the original UFO: Enemy Unknown using only ASCII characters. They're aiming to finish the project by 2015 and they have a current playable alpha version that can be downloaded for playing.

March 9th, 2014

  • Kokatu magazine has published an article about the creation of the original UFO: Enemy Unknown which includes a link to last year's video presentation made by its creator, Julian Gollop, about the original game's design process.

March 4th, 2014

  • XCOM: Complete Edition released for PC and Mac. Includes all of the DLCs released so far, including the Elite Soldier Pack, Slingshot and Enemy Within.

February 7th, 2014

  • XCOM: Enemy Within has won the Best Strategy/Simulation Game of the Year 2013 DICE awards. For a list of winners see [3].

February 4th, 2014

XCOM: Enemy Within and Hangar 6: R&D have been released!

XCOM: Enemy Within released

November 15th 2013

  • And now it is the rest of the world's turn as Enemy Within receives its international release today. So get on and enjoy the all new features!

November 12th 2013

  • XCOM Enemy Within is released in America with new features like the new human faction – EXALT, Base Defence and all new maps and council Missions. Enjoy the game and see you on the farm with the crashed UFO.

XCOM: Enemy Within Reviews!

November 11th 2013

  • Several reviews of XCOM: Enemy Within have been published today. To read/see them, check Escapist Magazine ("All of the fun new toys, however, do work a bit against the game's biggest flaw - after a certain point of advancement, the challenge and satisfaction of snuffing aliens dissipates quickly."), Shacknews ("Firaxis once again manages to balance XCOM's disparate elements, resulting in a challenging and satisfying experience."), IGN ("Enemy Within is an amazing expansion to a brilliant tactical game.") and Strategy Informer ("I could go on about the virtues of Enemy Within, about how good it was to play through the whole campaign again, but ultimately it’ll come down to two factors: The fact that the ending hasn’t changed a bit, and the fact that, ultimately, you’re still playing the same game.", and Revision3 ("EW gets a 4 out of 5.").

The Bureau Expansion

November 8th 2013

XCOM Base Defense confirmed on EW

October 23th, 2013

  • The newest preview videos released (here and here) have confirmed the addition of a Base Defense mission to XCOM: Enemy Within, a feature of the original game long called for by players. Check for more details on the Enemy Within page.

EXALT revealed!

October 9th, 2013

  • A new faction has been revealed for XCOM: Enemy Within, the upcoming XCOM: Enemy Unknown expansion. XCOM's new enemies are called EXALT and they're a secret paramilitary human group that is conspiring to use the alien technology and chaos of the invasion to achieve world domination. More details available at the Enemy Within page.

XCOM: Enemy Within details announced!

August 21st, 2013

  • Producer 2K revealed details about XCOM: Enemy Within, the upcoming expansion to XCOM: Enemy Unknown. The main features are the addition of the Meld, a substance that allows you to create a new class (Mech Troopers), with new weapons and abilities or to genetically enhance your soldiers (Gene Mods), along with other features. The release date is November 12th (US) and 15th (rest of the world) and check the full details on the XCOM: Enemy Within page.

XCOM: Enemy Within will be revealed on August 21st

August 3rd, 2013

  • Producer 2K has confirmed that it will reveal during Gamescom 2013 a new DLC for XCOM: Enemy Unknown called XCOM: Enemy Within.

June 9th, 2015
XCOM 2 on UFOPaedia. An XCOM2 page has been created to collect all the information released so far about the upcoming sequel to Enemy Unknown. Later a section for the new game will be added.
June 3rd, 2014
Long War on UFOPaedia. The much acclaimed Long War mod for XCOM: Enemy Unknown/Enemy Within now has its own subwiki at the UFOPaedia. Long War features over 700 changes to EU/EW and has been described by Jake Solomon (EU's lead designer) as: "If you liked XCOM, give The Long War mod a shot. Takes XCOM to a new level."
March 17th, 2014
UFOPaedia on Twitter. The UFOpaedia now has its own Twitter account ( Please use the hashtag #ufopaedia on your posts.
December 29th, 2013
Software Upgrade. UFOpaedia has now been upgraded from version 1.16 to version 1.22. Whilst functionality has been checked and should work as normal, if you encounter anything odd then please let Pete know under the Wiki Software Upgrade section here.
December 27th, 2013
Server Transfer. At 10am GMT on the 27th December the UFOpaedia will be transferred to a new server on strategycore. Posting will be disabled for a short period whilst the transfer takes place.
December 20th, 2013
Enemy Within mapped out. The Maps section of XCOM: Enemy Unknown now contains overhead images of all the EW DLC's new maps on the individual map pages.
November 22nd, 2013
Site Maintenance Continues. The good news is that it is possible now to register new users. The bad news is that the spammer problems aren't solved yet, so when registering please don't choose a suspicious username or you might find yourself blocked. Hang in there, Commander.
November 2nd, 2013
Site Maintenance. We're currently performing some site upgrades in order to solve the spammer problem and other issues. While the maintenance is underway it won't be possible to register new users but already existing users can continue working. Thank you.
September 23rd, 2013
Spam attacks. We've been having a lot of spammers recently so we're taking the policy of preemptive blocking of users with suspicious usernames. To prevent this happening to you either choose a username XCOM related or page edit right after you register. Thanks.
August 20th, 2013
The Bureau: XCOM Declassified section open. The UFOPaedia's section of the new XCOM game is now open. Feel free to start contributing.
February 7th, 2013
XCOM: Enemy Unknown maps revealed: The Maps section of the re-imagined game's now contains overhead images of all maps on their individual pages.
December 28th, 2012
Enemy Unknown section growing: The EU2012 section now has over 200 pages. Thanks to everyone who has contributed so far and keep enjoying the game in 2013. :)
October 4th, 2012
New Main Page: features a new Main Page, this to better structure the information and news. Each section draws information from two different pages XCOM_News for general news about the games and UFOpaedia News for news on the wiki site.

Enemy Unknown (2012)

XCOM: Enemy Unknown (2012) / Enemy Within DLC Meld Insignia (EU2012).png
Vigilo Confido shield.png Overview
Game Information
Commander's Briefing
Base Location
The Council
Difficulty Levels
Second Wave
Vigilo Confido black.png XCOM
Mission Control
Genetics Lab EW DLC
Cybernetics Lab EW DLC
Officer Training School
Psionic Labs
Situation Room
Gray Market
Covert Operations EW DLC
Lone Wolf (EU2012).jpg Soldiers
MEC Trooper EW DLC
Gene Mods EW DLC
Medals EW DLC
Covert Operative EW DLC
Head red 2.png Aliens
Alien Life Forms
Overview of Aliens
Alien Stats
Alien Deployment
Alien Artifacts
EXALT Insignia (EU2012).png EXALT EW DLC


Skyranger Pilot (EU2012).png Missions
Mission Types



Gameplay Mechanics

Chance to Hit
Critical Wounds
Bradford Small (EU2012).png Guides & Tips

Strategy Guide

Building Optimization
Air Combat
Story Walkthrough

Combat Tactics

Class Builds
List of all Abilities

Survival Guide

Shen Small (EU2012).png General DLC

General Information

Elite Soldier Pack
Enemy Within EW DLC
New Friend (EU2012).jpg Slingshot DLC

Operation Slingshot

Friends in Low Places
Confounding Light
Shaojie Zhang
Saved to Savior (EU2012).jpg Progeny EW DLC

Operation Progeny

Annette Durand
Meet New People Then Kill Them (EU2012).jpg Multiplayer


Multiplayer Tactics
Squad Builds
Happy to Oblige (EU2012).jpg Miscellaneous

Game Credits


News Ticker

Game Universe/Artwork

XCOM Heroes

Making The Game Harder

Glossary of Terms

Murphy's Laws (XCOM)

Combat Ready (EU2012).jpg Technical Information



Mods & Suggestions

Game Editors

Game Files

Unused Features

Wiki Tips

Enemy Unknown (1994)

UFO Badge UFO: Enemy Unknown (aka X-COM: UFO Defense)
General Information
The Geoscape


UFO Detection
UFO Interception
X-COM Bases
Base Facilities
Country Funding
X-COM Craft
Craft Armaments


Heavy Weapons Platforms
Miscellaneous Equipment
Alien Life Forms
Overview of Aliens
Alien Missions
Alien Ranks
UFO Components
Alien Artefacts
The Battlescape (Tactical Combat)

Mission Types

UFO Crash Recovery
UFO Ground Assault
Alien Base Assault
Terror Missions
Base Defence


Field Manual
Night Missions
Squad Composition
Rear Commanders
Initial Deployment
Sweeping the Battlescape
Time Management
Reaction Training
Reaction Fire Triggers
Alien Movement Patterns
Proximity Grenade
Smoke Grenade
Grenade Relay
Stun Rod
Game Strategies
A Beginner's Guide
Base Management
Base Layout Strategy
Experience Training
UFO Recovery Values
Manufacturing Profitability
Tricks, Tips and Hints
Common Mistakes
Managing the Item Limit
Making the Game Harder
Murphy's Laws of X-COM
Miscellaneous Information
X-COM Timeline
Weapon Analysis
Sightings in other fandoms
Glossary of Terms
Data Canisters
Realistic Equivalents
Cultural Influences on X-COM
Game Editors & Mods
Council of Funding Nations
The Mysteries of X-COM
GUS Music in Dosbox
Technical Information
Game Mechanics
Destroying Terrain
Damage Modifiers
Fatal Wounds
Accuracy Formula
Reaction Fire
Recovery Time
Equipment Recovery
Line of Sight
Difficulty Levels
Research Technical Details
Data Tables
Alien Appearance Ratios
Inventory TU Table
Movement TU Tables
Item Weight
Unit Height
Kill Modelling
Starting Stats
Alien Stats
Research Times
Game Files
Known Bugs
Game Versions
Open Questions

Sequels to Enemy Unknown (1994)

TFTD Badge X-COM: Terror From the Deep
General Information
The Geoscape
X-COM Subs
Sub Armaments
Submersible Weapons Systems
Base Facilities
Alien Research
Alien Artefacts
Alien Life Forms
Overviews of Aliens
Alien Missions
Alien Ranks
Terror Units
Alien Subs
Alien Sub Components
The Battlescape (Tactical Combat)
Battlescape Overview
Mission Types
Alien Sub Crash Recovery
Alien Submarine Assault
Terror Mission
Port Attack
Island Attack
Shipping Lane Mission
Artefact Site
Colony Assault
Base Defense
Game Strategies
TFTD Strategy Guide
Weapon Effectiveness tables
Weapon Analysis
Realistic Equivalents
Sightings in other fandoms
Enabling the cinematic intro/outro
Wish List
Technical Information
Data Tables
Alien Appearance Ratios
Game Files
Known Bugs
Research Tree Bug Avoidance Guide

Apocalypse Insignia X-COM: Apocalypse
General Information
City Maps
Buildings and Areas
Cityscape Fighting
UFO Incursions
Alien Ship Combat
Mission Types
Real-Time Combat
Turn-Based Combat
Real-Time vs Turn-Based Analysis
Starting a Mission
Agent Automatic Reaction Controls
Engaging the Enemy
Strategies for Troops
Base Defense
Capturing Live Aliens
Take Cover!
Quantum Physics
Agents Stats
Agents Medals
Agents Equipment
Agents Armor
Suggestions for Equipping Troops
Vehicle Weapons
Vehicle Engines
Vehicle Equipment
Alien Life Forms
Alien Overview
Alien Artifacts
Alien Tech Levels
Alien Ships
Alien Dimension
UFO Combat
Miscellaneous Information
Weapon/Equipment Analysis
Making the Game Harder
Sightings in other fandoms
Unused Game Features
Technical Information
Difficulty Levels
Data Tables
Alien Stats
Damage Modifiers
Game Files
Audio File Formats
Image File Formats
Cityscape Files
Input Device Reference
Mods, Utilities, Compilations
User Guides
NKF's Starter Guide
AllOutWar's Guide
Captain Foo's Beginner Guide

Prequels to Enemy Unknown (2012)

The Bureau: XCOM Declassified
Vigilo Confido shield.png XCOM
Game Information
From the desk of Myron Faulke
Difficulty Levels

The Bureau

The Base


Agent William Carter
Director Myron Faulke
Agent Angela Weaver
Lieutenant Leon Barnes
Doctor Alan Weir
Agent Nico DaSilva
Supporting Staff
Head red.png Aliens
Alien Life Forms
Xcom eu logo.jpg Missions
Gameplay Mechanics

Combat Tactics

Battle Focus

Mission Types

Major Operations (Spoliers)
Base Investigations
Minor Operations
Dispatch Missions
Game Strategies
Guides & Tips

Story Walkthrough

Class Builds


News From the Front

In-Game Notes

In-Game Photos

Glossary of Terms



Mods & Suggestions



Hangar 6: R&D

Agent Donovan

Light Plasma Pistol


Interceptor Badge X-COM: Interceptor
General Information
The Frontier
Hypernews Network
E-Mail X-Com E-Mail X-Com
General Information
X-COM: Enforcer
General Information
The Enforcer, Dr. Standard and the Enemy
Weapons and Power Ups
The Missions
Tips and Tricks

Featured Projects is also home to several open source X-Com based projects.

UFO2000 wiki
OpenXcom wiki
UFO:AI wiki

Discontinued Titles

X-COM: Genesis
X-COM: Alliance
General Information
General Information

Site Information
Community Portal
How to Edit This Site
Guidelines to Writing Articles
Where to Get the Games
Retrieved from ""