I didn’t realize how involved the children of divorced dads Packard and Montgomery were in the creation of the “Choose Your Own Adventure” gamebooks. (The children of divorced dad Will Crowther were one motivation for, and were early playtesters for, Crowther’s original Colossal Cave Adventure; the history of parser text adventure games and branching path gamebooks overlap in time and theme.)

You were a girl who wanted to choose your own adventures. Which is to say, you were a girl who never had adventures. You always followed the rules. But, when you ate an entire sleeve of graham crackers and sank into the couch with a Choose Your Own Adventure book, you got to imagine that you were getting into trouble in outer space, or in the future, or under the sea. You got to make choices every few pages: Do you ask the ghost about her intentions, or run away? Do you rebel against the alien overlords, or blindly obey them?

This was the late eighties in Los Angeles. You binged on these books, pulling tattered sun-bleached copies from your bookshelf: four, five, six in the course of a single afternoon. All over the country, all over the world, other kids were pulling these books from their bookshelves, too. The series has sold more than two hundred and seventy million copies since its launch, in 1979. It’s the fourth-best-selling children’s-book series of all time. Its popularity peaked in the eighties, but the franchise still sells about a million books a year.

[…]

The story of Choose Your Own Adventure is largely the tale of two men: Edward Packard, a lawyer who came up with the concept while telling bedtime stories to his two daughters (who sometimes wanted the protagonist to do different things), and R. A. (Ray) Montgomery, an independent publisher who put out Packard’s first book, in 1976, after all the big houses had rejected it….

Both men went through divorces shortly before the series started gaining momentum, and ended up writing many of their books as single fathers. Their children remember helping their fathers invent and flesh out new scenarios: Packard’s daughter Andrea suggested the idea of a time-travelling cave; Montgomery’s sons, Anson and Ramsey, suggested cars (the Saab 900 Turbo, the Lancia Stratos) for “The Race Forever.” Packard paid his children thirty-five cents an hour to read his manuscripts and offer feedback: Which parts were boring? Which choices would kids enjoy? (Andrea, Anson, and Ramsey ended up writing for the franchise, publishing their first Choose books during college.)–New Yorker