It's got to be poor stories for me. I've jumped head first into the Bioware bandwagon, though Dragon Age 2 threw me through a loop, and those games would be nothing without their stories. My favorite game of all time is Final Fantasy Tactics, because the story is insane, even though the graphics are from the 90s, the controls can be odd, fights can last for 30 minutes or longer, and there are translation errors and other glitches. The story makes it worth it though.