2026 · Scenario / Adventure / Module
World's Largest Dungeon, Book 4: Regions M-O
This 5E adventure book presents Regions M–O of a vast, interplanar megadungeon built as an ancient prison for dangerous monsters. Adventurers explore cursed corridors, face monsters and other hazards, uncover relics and lost power, and advance through a campaign designed to challenge characters across a broad range of levels. The updated material includes revised encounters, progression, and regional structure for use as part of the larger dungeon campaign.
Level Based (Earn XP and level up)Dice (Primarily d20)Attribute/Stat Based (STR, CON, PER, etc)
Free, on web, Android and iOS
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Game facts (players, playing time, age, credits) from BoardGameGeek.