Campaign Setting Guide: Perils of Portal Lake

2025 · Campaign Setting (game world)

Campaign Setting Guide: Perils of Portal Lake

This campaign guide introduces a fantasy setting where player characters are transformed into mice and must navigate forests, cities, dungeons, mines, and waterways. The campaign begins when a sacred relic vanishes from the human realm and is hidden in the mouse world. It provides lore, locations, NPCs, side quests, maps, monsters, spells, and magic items for a series of connected adventures. Conversion tables support AD&D and OSRIC characters, with guidance for adapting the campaign to 5e, OSR, Pathfinder, and related systems.

Sourcebook (rules/options to enhance play)Attribute/Stat Based (STR, CON, PER, etc)Level Based (Earn XP and level up)Dice (Primarily d20)

Game facts (players, playing time, age, credits) from BoardGameGeek.