The statues in the jungle set are modeled after the board game pieces in the original Jumanji (1995).
If Dwayne Johnson could play any other role in the film, he'd play Jack Black's character, Bethany. Johnson said, "I know how much fun [Jack] had every day playing a 16-year-old self-obsessed girl."
Dwayne Johnson and Kevin Hart are known for their intensive workout routines, but it was Karen Gillan - whose character is an expert in various martial arts and "dance fighting" - who did the most extensive work with the stunt team to learn the fight choreography for her scenes.
Jack Black had a lot of fun as Bethany teaching Karen Gillan's character to flirt. "I was teaching her how to flirt and how to work it, runway style. It was like a living organism kind of scene where some of it was on the page, but a lot was just happening in real time."
Tom Holland was originally cast as Seaplane McDonough but had to drop out of the film due to scheduling conflicts with Spider-Man: Homecoming (2017). Nick Jonas was cast in his place.