A prospective client asked for a presentation on societal collapse, with roughly a 400-year time horizon. As I had heard that Prof. Bruce Tonn was editing a special issue of Futures on extinction scenarios, I requested access to the essays ahead of publication. He kindly assented, and I drew on several of the essays to create this slidedeck of "collapse" scenarios (I wasn't asked to take the stories to complete extinction). Some of the stories I wanted to tell were not well-represented in the essays of the special edition, and so I drew on other resources as well. Finally, I chose to interpret "collapse" as "the end of the world as we know it," and thus also included a post-Singularity, nanotech, "mutable world" scenario. Please feel free to contact me (firstname.lastname@example.org) if you have any questions.