His book Lost Boys contains pretty fair descriptions of the videogame industry and development processes in the 80's, and he did a good amount of videogames writing in the 90's, including Monkey Island, The Dig and the disaster that was Neohunter.
http://www.gamefront.com/gaming-todays-exclusive-interview-w...
"a side-scrolling shooter that I’m not sure was ever published, since it was coming out just when first-person shooters completely took over the genre. However, for that game I came up with the slang that I later used in battle school in the Shadow books and in the movie scripts I’ve written for Ender’s Game. Nothing gets wasted."
(disclaimer: as they were finishing Neohunter, Ronin hired my bro to do their future tech and rendering, and IMHO things improved a lot for Ronin in that area)