Kingdom Hearts II: 11 hours, to beat Xemnas and Sephiroth, but not the Paradox Cups, no cutscenes.
Pokemon Ruby: 5 hours, in terms of beating the Elite Four
Dragon Quest: The Journey of the Cursed King: 26 hours. It took me a couple of playthroughs to get it down that far, since I'm the sort of RPG player who has to do everything I possibly can as I go through the story, so that time includes collecting the chests, and as many mini-medals as I could, plus the Monster Arena.
Pokemon Ruby: 5 hours, in terms of beating the Elite Four
Dragon Quest: The Journey of the Cursed King: 26 hours. It took me a couple of playthroughs to get it down that far, since I'm the sort of RPG player who has to do everything I possibly can as I go through the story, so that time includes collecting the chests, and as many mini-medals as I could, plus the Monster Arena.