I'm about to go out and buy Dragon Quest VII on the 3DS, so that's what I'll be playing probably right up until Pokemon Sun/Moon comes out. I beat DQ7 once before and it's one of the longest games out there. The main story alone easily takes 70-100 hours, and I usually take my time and do all sorts of side stuff n these games. I don't quite know what my playtime was for my first playthrough because I emulated it, but I'd estimate it was at least 80 hours. World record for beating the game is just under 16 hours, so you can cut out a significant amount if you know what's skippable, but still shows how huge this game is.
Here's where I would write something I think is witty at the time, and later realize I'm an ass.