Conversely, you'll see games like X3 where even a 500 page Prima Guide probably wouldn't cover everything, and yet the only thing the DVD retail version comes with is a little post card listing some of the default key binds. Gee thanks...
I am a little annoyed though, when a game makes you run through a mandatory tutorial section like in Far Cry 1 and Deus Ex: Human Revolution, showing you how to do basic things like walk, run, jump, and crouch that have been in every freaking modern FPS and have industry standard keybinds. I don't need a tutorial to figure out that "crouch" is probably performed by pressing the CTRL or C key.