Microprose games had awesome manuals. Typically more than a hundred pages full of details going well beyond explaining the game itself. For example, in a flight simulator it had details on every plane in the game, the historical context of the missions, dogfighting techniques, etc...
replyIt wouldn't be out of place in a library.
The manual to Grand Prix 2 taught me more about car racing than any other bit of reading, video, or whatever media. It had so much about how to drive, how to use telemetry, etc.
replyNot that I turned that knowledge into good results but that's another topic.
What a delight that game and its manual were.