FFXIII has the loooooongest tutorial. About 20 hours by my timer. Which I did 3 times. And then, another 5 hours until you emerge from your Cocoon (subtle, Squeenix) and reach the open world of Gran Pulse.
Even then, you STILL might miss where the game gets good. After reaching Pulse, you can find the optional sidequests in the form of Cieth (sp?) stones, and the specific monsters they want you to hunt down. The game points out 1 when you first enter the huge plains with the Adamantoise mulling about, but never pushes you to find and complete these. My second and third times through, I made sure to catch the first 9 or so (out of 50) that are available in the opening of Pulse, and discovered that the rest of the story content on Pulse was MUCH more manageable.
In short, FFXIII doesn’t trust the player with the combat for 20 hours, then doesn’t direct them towards optional content that would teach them the type of play the game expects for its next 10 hours or so. And finally, it doesn’t ever encourage them to go back and find what has changed on Pulse once the story is over (Titan, for instance).