2025 · Sourcebook (rules/options to enhance play)
A Miraculous Mousy Metamorphosis! OSE Conversion Guide
An official conversion guide adapts a whimsical and dangerous mouse-themed adventure for use with Old-School Essentials Basic/Expert rules. It includes converted monster statistics, NPC classes, spells, encounter adjustments, and treasure scaled for OSE play. Referee guidance supports the adventure’s tone, pacing, and challenge level while preserving its old-school exploration and rules-light gameplay.
Attribute/Stat Based (STR, CON, PER, etc)Level Based (Earn XP and level up)Class Based (Pilot, Wizard, Scientist, etc)
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Game facts (players, playing time, age, credits) from BoardGameGeek.