A sequel was written for the film, but never materialized. It was to do with a victim instead being pulled into the television set, rather than the zombies coming out, and having to find a way out before the film ended. Director Robert Scott wanted a lot more zombie action, and far more zombies than in his original film but was offered the same budget as the first to make the sequel - he declined and a sequel has yet to come to fruition.
While filming the infamous coming out of the television scene, actor Jack Stellman nearly fainted from breathing in the CO2 used to create the fog effect and had to be taken outside for air.
Young actor Rocky Duvall was only 16 while making this film and was still in high school. He was actually told by his drama teacher that he wasn't right for the role before bringing him and several of his class mates to the casting call. His teacher, needless to say, was shocked when he landed the part.
After the film was finished, Manson International, the film's distributor, thought it wasn't gory enough for a zombie film and gave the production team additional funds to go back and shoot some gory bits that they could edit into the film.
All zombies had backstories written for their characters, though their backstories weren't referenced in the final movie. Some of the known backstories for the zombies were: The Bride was a woman who was murdered at the threshold on her wedding day. Jimmy D. was a 1950's athlete who drowned, which is why he is blue. It is obvious he was once handsome and girls loved him, as he tries to repeatedly wants affection from Zoe and April. Jack was a man who died in a fiery car crash, which is why he is burnt and has an arm missing. And Ironhead was a serial killer who strangled people, which is why he is receiving obvious perverted and twisted sexual pleasure as he excitedly chokes the maid to death.