Phenomena was released theatrically in Italy on 31 January 1985 with a 116-minute running time. This version of
Phenomena is often referred to as the "integral cut". under the
alternative title Creepers. This version of the film was truncated to 83 minutes, with scenes cut entirely and other scenes being re-ordered.
Critical response Jon Pareles of
The New York Times reviewed the
Creepers cut of the film, finding that it "creaks along for its first hour or so, failing to work up any chills" and found the acting poor, writing, "The best acting is by an expressive, resourceful chimpanzee – definitely the year's Best Supporting Primate."
Kim Newman of
Monthly Film Bulletin said the film contained "astonishingly awful performances" and that the dialogue contained several unintentionally humorous lines, which Newman attributed to a language problem. Newman discussed the film's look and style, opining that "Argento's films have their stylishness to fall back on, but here he is experimenting with a washed-out blue look influenced by
Possession that works in short scenes but becomes wearying after a few minutes". Commenting on the acting, the review stated that "Pleasence does his best with the script, Jennifer Connelly doesn't even bother to do battle".
The Times found that the film contained traces of previous Argento films, "But the march of time and commercial success seem to have dulled the director's previous panache:
Creepers just drags its feet from one absurdity to the next."
The Sunday Times found
Creepers "only intermittently frightening" and an audience with "a taste for discreetly revealed schoolgirl thigh and/or insects will not be completely disappointed". Malcolm Johnson of the
Hartford Courant criticized some of the film's special effects, but concluded: "Otherwise, Argento displays his customary skill at horror chic. He plays Old World elegance against horrific sights as electronic scoring and macabre rock songs by
Bill Wyman,
Iron Maiden, and others give
Creepers a loud, mad buzz." In retrospective reviews, John Kenneth Muir discussed the film in his overview of horror films from the 1980s, finding
Phenomena to be "unusual" as well as "strangely stirring", and that the imagery in the film is "nothing short of amazing, even if the narrative is muddled."
Home media Creepers was released in the United States on
VHS and
Betamax in 1986 by
Media Home Entertainment. This release still had the shorter theatrical running time. By 29 March,
Creepers entered
Billboard Top Videocassettes Rentals chart. This chart was compiled from a national sample of retail store rental reports. By 5 April, the release reached number 29 on the charts. The film was first released on DVD in North America by
Anchor Bay Entertainment as
Phenomena, where it used the 110-minute version of the film.
Arrow Video released
Phenomena in the United Kingdom in 2017 including the integral version, the international cut and the
Creepers version. Arrow's Blu-ray was among the top ten top-selling home video releases in the United Kingdom on its initial release. In February 2022, Arrow reissued the film in
4K UHD Blu-ray format in three different limited editions, each featuring alternate artwork; one of the editions, available only through Arrow's online store, features artwork bearing the
Creepers title. Synapse Films also reissued a 4K UHD Blu-ray in North America. == Soundtrack ==