And there were so many scripts! Dan Aykroyd has mentioned in interviews over the years that he wrote a version of the third movie with his frequent SNL collaborator Tom Davis, who also penned Coneheads with Aykroyd. That one, titled Ghostbusters: Hellbent, had the Ghostbusters going to Hell and, according to this 2002 script review, meeting a version of the devil that was a "Donald Trump-like mogul." Maybe the movie was just ahead of its time? (Note: Donald Trump appeared in the video for Bobby Brown's "On Our Own," the Ghostbusters II them song.)
In the intervening years, both Harold Ramis and original director Ivan Reitman have been linked to the project, with Ramis bringing aboard Office writers Gene Stupnitsky and Lee Eisenberg, who wrote his prehistoric Jack Black and Michael Cera comedy Year One, to put together a script. This was the script that everyone was trying to get Murray to read. In 2010, Murray absolutely ethered them in a GQ interview. "I never went to see Year One," he said. "But people who did, including other Ghostbusters, said it was one of the worst things they had ever seen in their lives. So that dream just vaporized."