From the designer:
MYCELIUM and Other Horrors is a Zine Quest 2 compilation of 4 Incursions for The Gauntlet's fabulous Trophy Dark, based on different allergens that torment us all. Each incursion is a horror adventure unto itself, each one with a different theme: DECAY, FUNGUS, MOLD, and POLLEN. The adventures are horrific, psychologically intense, and likely to end in doom and pain for all involved. They are intended for Trophy Dark, but could probably be played in any system.