Re-releases
On 4 May 2007, Terror from the Deep was released on Steam by 2K Games, who has inherited the franchise (first only for the Windows XP, but a later update which enabled Windows Vista support). The game has been also re-released as part of the compilations X-COM Collector's Edition by MicroProse in 1998, X-COM Collection by Hasbro Interactive in 1999, X-COM: Complete Pack by 2K Games in 2008 and 2K Huge Games Pack in 2009.
Read more about this topic: X-COM: Terror From The Deep