Metafluid Fallout is a scenario for FIST. It works both as an excellent follow-up to Mandlebrot Set, or as a standalone.
The PDF is 16 pages, with a clean, well-organized layout and easy to read text. There's a custom cover and a rad photobashed hexmap, as well as several public domain illustrations.
The scenario is a hexcrawl without map information, but with the ability to get a premonition about what's in an upcoming hex.
Like Mandlebrot Set, Metafluid Fallout takes place in an unstable zone of spacetime. As a result, the encounters are wild and flavorful, with some being big and bombastic and others skirting existential horror. More than a few are both.
There's a really neat mechanic for replacing player characters in here, with PCs having decent odds to come in as an alternate timeline replacement, as well as new PCs bringing trouble with them when they arrive.
Overall, the writing in this module is incredibly good, and the scenario design is equally strong. If you want an extremely eventful hexcrawl, you should pick this up.