Was Red Storm Rising based on the Harpoon game?
Short answerTo an extent. Red Storm Rising drew on naval wargaming, possibly including the Harpoon board game, while the later computer game drew more directly on the novel.
NotesRed Storm Rising drew partly on naval wargaming, with the Harpoon board game offered as a tentative influence. The later computer game drew more directly on the novel. That creates a feedback between simulation and fiction, with each adaptation changing which earlier work it follows most closely.