The following facts have been added from submissions by several Horror Nights fans. If you would like to send in your own, or correct our current facts, please feel free to e-mail us.

• 2007 was not the first time the title "Carnival of Carnage" had been used at a Halloween Horror Nights event. In 1992, the first Halloween Horror Nights at Universal Studios Hollywood, a scarezone was promptly titled the "Carnival of Carnage."
  

• A portrait of the Storyteller could be found amongst portraits inside "Dead Silence: The Curse of Mary Shaw." The same portrait was used in "Halloween Horror Nights: Sweet 16" inside the "Dungeon of Terror."
   

• Several props from the "Back to the Future" attraction could be found in both "Psychoscareapy: Home for the Holidays," and "Dead Silence: The Curse of Mary Shaw." Primarily the mass amount of clocks throughout Psychoscareapy, as well as a desk found in Mary Shaw's workshop. In the fireplace scene of Psychoscareapy, a portrait of Doc Brown's children sitting in front of the Clock Tower can be found inside of an actor's boo-hole.
   

• Universal licensed official horror movie icons - Freddy Krueger, Jason Voorhees, and Leatherface - from New Line Cinema. While this was the first time the named characters could be spotted at the event, all three of them were featured together (in likeness) in the original "All Nite Die-In" from "Halloween Horror Nights 13."
   

• "Carnival of Carnage" featured one giant scarezone rather than several small ones with different themes. This centralized the overall "Carnival" theme of the event to make it consistent and cohesive. To add to the area, a full-sized Ferris Wheel was installed in front of Men in Black, scareactors drove around in bumper cars, and the motorcycles used at the event were modified to look like crazed carrousel horses.
   

• The original title of "Psychoscareapy: Home for the Holidays" was "Silent Night, Psychotic Night." Last minute name changes are not uncommon for the event, however, one of the T-Shirts for this years event was printed with the "Silent Night, Psychotic Night" title on it.
   

• "The Thing: Assimilation" is based off of John Carpenter's 1982 film "The Thing." Universal had planned on creating this house many times in the past (more can be read in HHNvault's article "The Thing - Assimilation") but did not execute the house until the film's 25th anniversary.
  

• This was the first year Halloween Horror Nights featured a stage show version of the Rocky Horror Picture show. This idea had been brought up several years in the past, but was never implemented until 2007.