Why don't games do that anymore?
I cannot stress this enough. I was pleasantly surprised when I recently bought Banished and found the in game help was structured like a wiki-pedia. A rare thing these days. Heck, Big Huge did it in Kingdoms Of Amalur and there have been a couple of other developers do it, but I notice it's usually all small companies. The bigger companies don't want to waste resources on something they feel the players can look up themselves. Sad, but true.