In the 1980s, books like How to win at Nintendo Games were published with strategies, cheats, maps, and so forth. That particular line of books were cheap black-and-white (well, yellowish, IIRC) paperbacks. But there were full-color glossy strategy books that included full maps for games.

I had a bunch of those books. I didn't even have an NES! (Though I desperately wanted one...) But I was so enamored with video games that I pored over them.