Well, if you buy a game, you're bound to get some litterature, or manual, with the game. Now, in my experience, this manual, has become thinner and thinner, as the games get more and more advanced and visually dazzling.
There used to be history, lore, even sometimes short tales describing the universe. Great examples would be:
Starcraft
Alpha Centauri
And truly dissapointing ones would be like:
WoW
Warcraft III (both was by FAR worse off than WarII)
Now I miss this. I want something cool to mull over while I take a dump. Is there anyone else who feels the same?
You do know that Blizzard has written over 2000 pages of WoW history + all warcraft elements can be found from WoW.
I play WoW myself and I got this book with 589 pages only telling the past stories about different races and classes. WoWs background stories are enourmos

Starcraft is also from Blizzard and I did just check this out. It's background stories are smaller same with the history written than WoWs itself. WoW is based on all Warcrafts stories making it even bigger..
http://www.worldofwarcraft.com/info/story/index.html here are just samples of that stuff :p...
But I do agree with the main idea there