91% Stephen King Netflix movie knocks viewers sick with ‘unfilmable’ scene

A 2017 Stephen King movie has viewers feeling so sick, they're running to the bathroom mid-watch.

It is (now, officially!) spooky season, so who better than the King of Horror himself to give us a good fright?

King's latest TV series, It: Welcome to Derry has just released on HBO, a prequel to the hit movie adaptations It and It Chapter Two. The series is set in the town of Derry, Maine, in 1962, nearly 30 years before the terrifying events of the first movie.

It tackles the darker history of Derry, including the origins of nightmare-worthy Pennywise the Clown.

But if you'd rather dodge the creepy circus freaks this Halloween (and I wouldn't blame you!), then there's another King movie that's equally as thrilling, albeit in a slightly different way.

The Netflix movie is based on a Stephen King's 1992 novel of the same name (Mathew Tsang/Getty Images)

The film in question follows Carla Gugino as a woman named Jessie who travels with her husband, Gerald (Bruce Greenwood), to a remote lake house for a romantic getaway.

But when a bondage game goes horribly wrong and Gerald suddenly dies, Jessie is left handcuffed to the bed - trapped, alone, and fighting to survive.

As time passes, she confronts her repressed trauma, hallucinations, and a terrifying presence lurking in the dark.

The movie in question is called Gerald's Game and is based on the 1992 King book of the same name.

Gerald's Game had viewers feeling queasy (Netflix)

'I genuinely felt faint'

It might have racked up an impressive 91 percent score from Rotten Tomatoes critics, but one scene in particular has knocked viewers sick.

It's so grim, it was considered to be 'unfilmable' at one point - but director Mike Flanagan managed to pull it off.

One social media user warned: "Be careful. The big climactic scene made me sick to my stomach. I had to take a break before I could come back and finish watching it."

Echoing similar sentiments, another person admitted to almost passing out while watching it.

The Twitter user wrote: "Okay, I genuinely nearly just passed out. #GeraldsGame has been on pause for ten minutes. A film has NEVER affected me like that before."

They added in a follow-up tweet: "Can't believe it affected me like it did. I swear I've seen worse. But I genuinely felt faint. Had to run to the loo and everything."

Gore aside, others were impressed by how faithful the movie adaptation was.

"Masterpiece. The last ten minutes were brilliantly executed," one fan wrote on IMDb.

"Every sequences of the novel is present in the movie. Acting is delivered at its finest.

"Netflix need more Stephen King adaptations like this one. A must watch for everyone," they concluded.

Gerald's Game is streaming now on Netflix.

The first two episodes of It: Welcome to Derry are streaming on HBO, with new episodes released every Sunday.