With so many projects in development, it can be a daunting task trying to keep them all separate. In an effort to help the community, I have created a list of all the games which are known. Websites in green are games currently in active development, while site names in red are inactive.

X-COM Projects

• Aerials vs. X-COM
  • Website: http://sourceforge.net/projects/aerials-vs-xcom/
  • Trial Release: None

• Invasion 2021
  • Website: http://i2021.release.ru/
  • Trial Release: v0.3.3 - March 17, 2006

• MJ-12: EBE Defense
  • Website: http://ghostryder.net/index.html
  • Trial Release: None

• Oblivion
  • Website: http://mods.moddb.com/8263/oblivion/
  • Blog: http://gameoblivion.blogspot.com/
  • Trial Release: None

• Pocket UFO
  • Website: http://www.smksoftware.ru/pufo.shtml
  • Trial Release: v1.26 - May 29, 2007

• Project Talon
  • Website: http://www.project-talon.org/
  • Trial Release: Pre-alpha Demo - July 28, 2003

• Project Xenocide
  • Website: http://www.projectxenocide.com/
  • Trial Release: #1836 - April 04, 2008

• Quasar - Intron Theory
  • Website: http://www.quasaronline.org/
  • Trial Release: None

• The EDF Project
  • Website: http://edf-project.sourceforge.net/
  • Trial Release: None

• UFO2000
  • Website: http://ufo2000.sourceforge.net/
  • Trial Release: v0.7.1062 (stable) - July 18, 2006
  • Trial Release: v0.7.1086 (beta) - September 3, 2007

• UFO: Alien Invasion
  • Website: http://ufoai.ninex.info
  • Trial Release: 2.2.1 - April 29, 2008

• UFO: Cydonias Fall
  • Website: http://ufo.yaa.dk/
  • Trial Release: None

• Virus: Survivor Chronicles
  • Website: http://www.garagegames.com/blogs/70322/10698
  • Trial Release: None

• XCom Base Defence
  • Website: http://games.byond.com/hub/Ginseng/XComBaseDefence
  • Trial Release: None

• XCom: Colonisation
  • Website: http://www.codeplex.com/Xcom
  • Trial Release: v0.48I - August 08, 2006

• X-COM: Last Hope
  • Website: http://lasthopemod.moddb.com/
  • Trial Release: XComMod060907 - September 07, 2006

• X-Com: Tactical (Board game)
  • Website: http://babylon.alphacomplex.org/~xcom/
  • Trial Release: Game - June 2, 2004 (Playable).

• X-Com: The Time is Now
  • Website: http://www.geocities.com/sup_super/
  • Trial Release: Battlescape - April 19, 2003

• X-Com: UFO 3D - Releasedate Unknown
  • Website: http://www.xcomufo3d.com/
  • Trial Release: None

• Xcom-XFCE (Theme based on the Xcom Apocalypse Now game)
  • Website: http://themes.freshmeat.net/projects/xcom-xfce/
  • Trial Release: None

• X-Force: Fight for Destiny
  • Website: http://www.xforce-online.de/
  • Trial Release: v0.911 Final - May 25, 2008

• 2080: Space Colonization
  • Website: http://www.spacecolonization.net/2080/portal.php
  • Trial Release: v0.0.3.5 - June 25, 2004

X-COM Related Projects

• Global Defense Force (MMO persistent game in Flash)
  • Website: None
  • Trial Release: None

• Hostile Horizons (StarCraft-styled RTS based on X-COM)
  • Website: http://www.hostilehorizons.com/HHPortal/
  • Trial Release: None

• Interloper: Sub-Terran Defense (CPS Programming Final Project)
  • Website: http://www.andrew.cmu.edu/course/15-493/projects/interloper/index.htm
  • Trial Release: None

• Isidor (Proof-of-concept isometric tile engine)
  • Website: http://www.seul.org/~grumbel/isidor.html
  • Trial Release: None

• X-Com DS (Nintendo)
  • Website: http://forum.gbadev.org/viewtopic.php?t=13472
  • Trial Release: None

Other Projects

• Turret Wars
  • Website: http://www.lcfgames.co.uk/blogs/
  • Trial Release: None

• Enemy Unknown (Command & Conquer Total Conversion for Red Alert 2: Yuri's Revenge)
  • Website: http://marshall.cannis.net/ufo/index.htm
  • Trial Release: None

• Taskforce (Turn-based Strategy game based on X-COM)
  • Website: http://www.treality.freeserve.co.uk/taskforce.html
  • Trial Release: v1.03

• X-Com: Escalation (Command & Conquer Total Conversion for Yuri's Revenge)
  • Website: http://www.ppmsite.com/forum/index.php?f=199
  • Trial Release: None

• X-Com: Terror From The Deep (Command & Conquer Total Conversion for Yuri's Revenge)
  • Website: http://forums.freedomstudios.net/forumdisplay.php?f=170
  • Trial Release: None

If any of this information is incorrect, please contact me immediately so that the list can be amended.
By the same token, any project leaders are encouraged to read Our Invitation for some special benefits.

Last updated: May 25, 2008.

- Zombie