47. Xenoblade Chronicles: 22.5/30, Nintendo/MonolithSoft, Wii 2012.
I really have to get around to replaying this someday. Perhaps when the Smash Bros/Bayonetta rush is past. In fact, it's incredible length is what hurt its replayability score: i'd need a sizable window to consider playing it again. An excellent game, but if it were about 75% of its current length, it could be a good 10-15 places higher in the list.
Monster Hunter: pissing me off since 2010.