It’s obvious to anyone who saw the movie why they did it, but despite Guardians of the Galaxy being a 21st-century movie, they released the soundtrack on cassette tape.
There’s literally a Spaceballs novelization. I can guarantee it’s nowhere near as funny as the actual film.
Despite the name, the James Bond films Moonraker has absolutely nothing to do with the Ian Fleming Novel Moonraker, so they wound up having to make a novelization of the film under the title “James Bond In Moonraker” to prevent confusion with the previous book.
They had already done the same thing for The Spy Who Loved Me. Both novelizations were written by Christopher Wood, who wrote the screenplays for both movies. These are easily the two most puerile and awful of the Bond films. But I have to give the novelizations credit – they’re better than you’d expect, and better than the movies. But still not very good.
There have been a lot of pointless novelizations, where you’d think re-releasing the source novel or story would have been enough.
The Thing – novelization by Alan Dean Foster. You’d think they could just reprint a collection of John W. Campbell stories featuring this one.
Total Recall – Piers Anthony wrote a novelization. They could have just published a collection of Philip K. Dick stories highlighting We Can Remember it for you Wholesale. In fact, some company did just that. But the mass-market edition was Dick’s. Reportedly awful. Personally, I think they should have just published Robert Sheckley’s The Status Civilization (from which they stole a lot of the film) instead.
The Island of Dr. Moreau – My recollection is that they issued a completely new novelization as a tie-in for the release of the 1977 Burt Lancaster - Michael York - Richard Basehart version, but I can’t bring it up on the internet right now.
Doctor Strangelove – Peter Bryant completely rewrote his novel Red Alert as a tie-in form the film so it would more closely resemble the movie
Marooned – Martin Caidin did the same with his novel Marooned when the movie came out.
Forbidden Planet by W.J. Stuart (really mystery novelist Philip MacDonald) is one of the weirder novelizations I’ve read.
The movie is based on Shakespeare’s The Tempest (with very significant changes – it’s not really an adaptation, as I’ve argued many times), so there was no original. Stuart’s novelization is interesting because it differs markedly from the movie, which is weird in a business where they usually try to make the tie-in match the movie pretty closely. Nor do I think this is a case like the Dell and Gold Key comic tie-ins where the creators of the tire-in were given a copy of an early draft of the script, and things changed during production. “Stuart’s” changes seem to be done in the service of making the story more logically consistent for him. (Similar to the way Isaac Asimov’s novelization of Fantastic Voyage differs from the film because the good Doctor wanted to correct their scientific and logical errors).
In Stuart’s novel, for instance, the animals aren’t “real”. The film explains that the Krel visited Earth and brought back biological specimens (hence the Tiger). But in the novel a monkey gets run over by the crew’s utility vehicle, and when Doc Ostrow dissects it he finds mostly random tissue inside with a few features, but not a functional anatomy. The monkey isn’t something brought back by the Krel, but must be a product of the Krel Id Machine taking its cues from Morbius’ mind to construct sort of living animatronic animals. There are other such differences.
The novelization was published by Bantam at the same time the film was released in the fifties, with a (slightly wrong) painting of Robby on the cover, and with a photo from the movie on the back cover. It’s been republished several times since (the Internet Speculative Database lists at least six American editions, with still more foreign editions, the most recent in 2005)