 "Alien Carnage" was originally titled "Halloween Harry", and was released under this title for its first two versions.After v1.2, Apogee suggested to the developers that the title should be changed because it might be viewed as a seasonal Halloween-themed game, limiting sales during the rest of the year.They renamed it to "Alien Carnage", and it was re-released as "Alien Carnage v1.0" in 1994.