This month’s What’s the Difference from Cinefix compares the book sequel written because the movie adaptation was successful and the director wanted more source material to ignore. Jurassic Park: The Lost World.
Honestly, I can never keep it straight in my head which parts of the novels ended up in which movie. As mentioned in the video, the opening scene of The Lost World was actually from the first book. There are other examples, like the “birdcage” scene in one of the other movies was in the first book… I think.
One thing is for certain: Spielberg knows how to make a film. He knows how to build tension, he knows how to establish sights, sounds, and characters so that sequences hang together, and he knows not to have a talking dinosaur in an aeroplane.

But The Lost World is an example of one the worst reasons you write or film a sequel: because the first one was successful. I don’t know exactly what Spielberg’s motivations were for the sequel – maybe he was under contract, maybe he needed a new wing on his house – but the film was dull. It was trying to recapture the lightning bottled in the first film. The same can be said of the book. Crichton didn’t originally want to write a sequel and was only convinced by Spielberg saying he’d give him lots of money that he would be keen to direct a movie adaptation of the sequel if one were written.
I’m on record as not being much of a fan of Michael Crichton’s books. He has a tendency to write solid thrillers that act as vehicles for anti-science rants by a raisonneur or mouthpiece. There is nothing wrong with doing this, per se, but science is awesome, so make sure your criticism is on point. Or don’t, depending on whether you want to impress me or someone who thinks chakras are a thing.
Needless to say, I was a fan of the first film, less so the book. The sequels… Put it this way, I haven’t bothered watching the new ones starring Chris Pratt yet.