Early versions of the film claimed that they were related to a Stephen King work. King did write a short story called "The Lawnmower Man", but it was completely different than the movie. King sued the filmmakers, and had his name removed from the film.
New Line Cinema had obtained the rights to the Stephen King short story "The Lawnmower Man", and the producers also had an unrelated script called "Cyber God". They simply placed King's title on the production of "Cyber God". King was furious at this abuse of his name, and he sued the studio to have his name and title removed from the film and promotion. They refused, until the studio was ordered to pay ten thousand dollars and full profits.
Jenny Wright (Marnie) did only the close-ups in the VR strobe scene, because the strobe light made her sick. Her wide-angle shots were done using a double, and the close-ups of her face were done with a bluescreen, so that she didn't have to move.
There are three video games based on the movie. Scrolling action game The Lawnmower Man (1993) for Game Boy, Genesis, and Super Nintendo, loosely follows the plot of the movie. FMV adventure game The Lawnmower Man (1993) for DOS, Macintosh, and SEGA CD, uses clips from the movie, and is a direct sequel to the movie, since Its plot begins where the movie ends. Adventure game Cyberwar (1994) for DOS and PlayStation is a non-FMV sequel to the FMV game.
Mara Duronslet (Mara Everett, hotel clerk) also appeared in Peter Gabriel''s Kiss That Frog video. An expanded version of that music video toured the country in 1993 as the Mindblender, a simulator ride with computer effects similar in style to The Lawnmower Man.
This movie has similar qualities to Pierce Brosnan's first Bond movie GoldenEye (1995), where they both take place in a facility, and Brosnan's character puts bombs in both to explode. This movie inspired one of the episodes of Rick and Morty (2013), called "Lawnmower Dog". A dog appears in the sequel of this movie. This movie has similar qualities as Ghost in the Shell (2017), where both antagonists want to go to the mainframe. They also speak the same. Pierce Brosnan also played a lot of doctors and professors over the years. Dean Norris, who played Hank in Breaking Bad (2008), was also in Terminator 2: Judgment Day (1991). The only similarity the short story has to this movie, is the Lawnmower Man killing someone with a lawnmower. Also, the police think that nothing happened, but in the book, they think the protagonist is crazy. They have no virtual reality in the story, just a killer with a lawnmower.