large sections of the previous three movies are shown
mentioned in dialogue
Molly says to Sean " Everyone calls us the Brady Bunch"
character dresses as Leatherface
during the campfire scene, in the beginning the said " I hear 2 stories 1: he's dead and 2: he's in hollywood playing the dark-haired girl on the facts of life".
Judd's wearing the Jason mask that Jason first wore in Friday The 13th Part 3
character dresses as Freddy Krueger
In the beginning, the newsreporter mentioned about the murders from Camp Rolling Hills, which is a reference to Sleepaway Camp II: Unhappy Campers.
"Something to Scream About" is a documentary that references (and features) a wide variety of motion pictures as actresses discuss being in the B-Movie business.
Snob mentions the sequel
Snob recaps the previous film.
Photograph is shown.
Linkara starts singing "I'm a Happy Camper" but stops himself.
James talks about the sequels
Snob recalls reviewing this movie
The movie is reviewed.
"Really? That couldn't have happened during Sleepaway Camp II?"
recalling the previous sequels
Making of Featurette
recalling Angela singing a motivational song
Angela becomes a Paul Kersey like character who kills campers who get away with the rules
The scene where the Killer tries to kill a student with a guitar string is like the scene where Angela kills Demi with a guitar string in Sleepaway Camp 2 Unhappy Campers.