Chuck Wendig’s weekly Flash Fiction challenge - take a little from Column A and a little from Column B. 40 SF/F subgenres enter. 20 SF/F sub-subgenres leave.
I have 1 and 11: Haunted House Bumbling Detective. How to do this and not do Scooby-Doo?
In the meantime, the list can spur ideas for a game with a suitably high Weird Level. As might the previous challenge with tables for three random elements ranging from a library to the end of the world. (Which is, of course, a classic Twilight Zone story...)