For me, oddly enough, it was Awakening, simply because you don't have to move the system around much when you play, so the 3D effect isn't constantly going in and out of focus the way it might with some action games. But I can't say the effect has truly aided me much in gameplay ever, even with SM3DL. I've enjoyed it for a short time with many games, including OoT, but Awakening was the only one I could stand playing through the entire game with it on. Usually, my eyes start to hurt quickly, but with Awakening, it didn't hurt as much and I felt I was missing out on some wonderful visual effects whenever I turned it off. --- "The hardcore you've been waiting for!"