Mürky Bog is a pamphlet-sized "dungeon" compatible with .
Players explore the bog to figure out how to enter a mysterious, cursed building, whose contents are unspecified, but could contain treasure or an entrance to a larger dungeon.
They must avoid a collection of new monsters:
- bog mummies
- carnivorous plants
- living trees
- giant insects
- and an enormous undead mammoth rampaging across the map
- as well as the dangerous curse that protects the building
A town in a nearby forest, and ruins from a mining expedition, offer different paths to finding a way in.
A large, annotated map covering most of the inside of the pamphlet describes the bog. The outside segments contain stat blocks for new monsters.
