- The role of Nick Jonas in the film was originally to be played by Tom Holland, but because Holland was busy filming "Spider-Man: Homecoming" and had no time to do so, it was replaced by Nick Jonas.
- Soon after the film began, four high school students took out many magazines, one of which had the face of Robin Williams. A sign was hung in the jungle of the game with the words "Alan Parrish" (Alan Parrish), which is the name of Robin's role in the original film. These are all easter eggs specially arranged by the film crew.
- Karen Gillan worked out with her stand-in before filming. She also participated in dance classes and fighting classes.
- In order to make the brave game more immersive on the screen, the actors and staff overcame various difficulties and went to the jungle of Oahu, Hawaii to take pictures on the spot.
- The giant jaguar mountain in the film is a mountain top in Hawaii. The 12-meter-high jaguar head sculpture is finished with sculptural foam, and then made of cement and plaster to achieve the effect of stone.
Jumanji: Welcome to the Jungle behind the scenes gags
Jumanji: Welcome to the Jungle quotes
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Young Spencer: A game for those who seek to find / A way to leave their world behind.
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Professor Shelly Oberon: Seriously, I can't even open my mouth around you. You don't even know me, but you, like, decided you hate me.
Ruby Roundhouse: Look, I just think you live in, like, the "hot popular girl" bubble, you know, where everybody either treats you like a princess or like an object. Maybe it makes you a little self-absorbed or something?
Professor Shelly Oberon: That's fair. But do you think that maybe the reason why you are so judgy is because you are like afraid that people are not gonna like you, so you've decided not to like them first? I'm just saying, you're a babe, go with it.