XCOM has been delayed by 2K Games until 2013 according to reports.
The publisher has decided to re-launch the classic PC franchise with recently-announced strategy title XCOM: Enemy Unknown this year, according to Game Informer.
XCom is a game set in an alternative dimension, in which an unknown alien race is intent on ending mankind. Humans band together in an attempt to find out about these creatures, and how to defeat them.
It will mean that the first-person reimagining, which was first revealed in early 2010, will now be released in 2013.
Set during the early stages of an alien invasion, XCOM will retain elements of the strategy games, including team-management in battle and non-linear missions.
XCOM will be available for Xbox 360, PlayStation 3 and PC.