At least as far back as the first Final Fantasy on the NES, developers have reckoned that players might actually not read the manual for all the controls and general know-how of playing the game. As games grew more complicated, it also appeared that some actions were simply really hard to get across with just words, at least without a 12-page essay on the single function. Thusly, in-game tutorials have been in games with increasing regularity, to the point where it's more likely that games have at least one sort of tutorial than none at all. They come in many flavors: