SCP 001 When Day Break

SCP 001 "When Day Breaks" tells the story of humanity going extinct in an apocalyptic future, told through a masterful and horrifying combination of normal-format SCP writing mixed together with prose. This is important, and slightly jarring when you first see it. The prose is out-of-universe. It describes what happens to you as you are reading the file. But we begin with it, as you escape into an abandoned Foundation shelter, running from some monster and barricade yourself in an empty, long-forgotten room.