Why did Godin decide to create a book series based on third-party NES games, and why did he use the name F.X. Nine?

His reasons were both sentimental and practical. Godin was talking to his 10-year-old nephew about his hobbies, and was surprised to discover that the boy had never read a book for fun. Ever. Reading didn’t seem to interest him or other children his age. What was popular with children, however, was playing video games on the NES. Godin set out to create books that his nephew would want to read — and thus the Worlds of Power series was born. —Struck and Sharkey —8-Bit Lit: Inside the NES’ World of Power Series (1Up.com)