Hi guys. I'm looking for a specific fic, an old one - it was written sometime in season 3 or between season 3 and 4, as far as I can remember. I've read it a few years ago, so I hope I can remember it well enough.
This is a oneshot of a rather short or medium length, in which you only reveal the point of the story at the very end. It's a gen, and naturally, no angels are involved. The brothers are traveling, I think they are just traveling and not hunting as well, and the whole time Dean - whose point of view we are seeing - feels that there is something rather weird about it all, but he can't tell what exactly. At the end, it reveled that everything they saw was actually an artificial world that Sam created somehow with his powers and contains recollections of his memories and experiences, and the whole real world outside of them is ruined, everyone dead but the two of them. 

I wish someone would be able to help - I'd be so happy! :)


Edit: The fic is found by grasshopr_molly: it's Dwellers in Silence.

Thanks a lot to all the good people that helped and tried to help me!