A group of American teens comes to Ireland to visit a friend who takes them on a camping trip in search of the local, fabled magic mushrooms. When the psychedelics start taking hold, the panicked friends are attacked by ghostly creatures; but how can they determine whether what they are experiencing is reality or hallucination?
Unfortunately the movie Shrooms is not yet available on HBO Max.
| Directing | Paddy Breathnach | Director |
| Production | Kelly Wagner | Casting |
| Camera | Nanu Segal | Director of Photography |
| Art | Mark Geraghty | Production Design |
| Production | Natasha Cuba | Casting |
| Production | Paddy McDonald | Producer |
| Production | Robert Walpole | Producer |
| Costume & Make-Up | Rosie Hackett | Costume Design |
| Sound | Dario Marianelli | Original Music Composer |
| Sound | Andy Malcolm | Foley |
| Sound | Fionn Higgins | Dialogue Editor |
| Sound | Peter Blayney | Sound Re-Recording Mixer |
| Sound | Caoimhe Doyle | Foley |
| Sound | Andrew Felton | Boom Operator |
| Sound | Tom Johnson | Sound Re-Recording Mixer |
| Art | David Wilson | Art Direction |
| Sound | Jon Stevenson | Sound Designer |
| Art | Dave Peters | Property Master |
| Sound | Goro Koyama | Foley |
| Costume & Make-Up | Linda Mooney | Makeup Artist |
| Art | Rory Bruen | Assistant Art Director |
| Lighting | Dermot Coleman | Electrician |
| Lighting | Stephen Carthy | Electrician |
| Crew | Eddie Drew | Animal Wrangler |
| Camera | Roger Tooley | Steadicam Operator |
| Lighting | Richard Nevin | Electrician |
| Camera | P.J. Dillon | Second Unit Director of Photography |
| Sound | Chris Benstead | Music Editor |
| Directing | Kathleen Weir | Script Supervisor |
| Camera | Liam Daniel | Still Photographer |
| Lighting | Liam Moran | Electrician |
| Lighting | Warren Ewen | Gaffer |
| Lighting | Tim Fletcher | Electrician |
| Production | Rebecca Roper | Casting |
| Lighting | Mike Mooney | Electrician |
| Costume & Make-Up | Louise Stewart | Costume Supervisor |
| Lighting | Carlo McDonnell | Electrician |
| Writing | Pearse Elliott | Screenplay |
