One interesting detail about Clancy.. his follow-up was co-wrote with Larry Bond.. "Red Strom Rising" and was inspired by playing a board game called Harpoon... which itself became a computer game.
Tom Clancy met Larry Bond in 1982. Clancy had purchased Bond's wargame Harpoon as a primary source for his future novel The Hunt for Red October (1984).[5] They used the board game's second edition miniature rules to test key battle sequences, notably the Soviet operation to seize Iceland and the attack on the carrier battle group in the "Dance of the Vampires" chapter, with Bond refereeing the game sessions, which typically involved several players on each side (Clancy among them) acting in various roles.[6]
The two discussed Convoy-84, a wargame Bond had been working on at the time that featured a new Battle of the North Atlantic. The idea became the basis for Red Storm Rising, although Clancy is later referred as the sole author. "I wrote like 1 percent of the book," remarked Bond. For research on the Politburo scenes, Clancy and Bond interviewed Soviet defector Arkady Shevchenko.[7]
IIRC Bond is still writing Clancy like books - I believe he did a more modern updated RSR.