I had that ending hyped up for me in advance. When I finally got to it, I was shocked at how the game only shows you maybe 3 frames of video that might imply, if you freeze-frame it, what the hell is happening. It's so incredibly intentionally vague that I"m not sure if it should qualify as a twist. "If you give someone a twist ending, but more than half the audience can't tell WTF happened, is it still a surprise?" That's some zen crap there.
Silent Hill: Shattered Memories for sure though.
backlogger.tumblr.com - The Backlogger, where I wade through an ever-expanding backlog of video games