I'd rather HTCs produce more posters than rewrite or copypasta the games instructions into a PDF.
My logic isn't that it's of no value, but when one uses the internet to download the game, they can use the internet (and the website and forum) to also learn anything about anything within or about the game.
On the other hand, if someone could produce a 2 - 5 page PDF explaining almost everything about the game one needed to know, please do send it off with game download. But I suspect a satisfactory product would be 50 pages up.