7.)Final Fantasy X
I played this game at a young age, so I wasn't able to fully grasp the whole idea of the story. However, I was able to understand the fact that Tidus and Yuna won't be together. This was particularly heartbreaking since the couple has been through a lot of trials throughout the entire game.
I remember fighting an intense battle just to break up her wedding with Seymour only to find out that they won't live happily ever after. I mean come on, it was so sad to see Yuna pass through Tidus as he fades away.
When the HD edition comes out, be ready to feel the rollercoaster of emotions once more.