2026 · シナリオ／アドベンチャー／モジュール

The Crypt of Atan-Thu (OSE)

An Old School adventure for 4–6 characters of levels 6–8, set in the hidden crypt of an infamous necromancer. The party explores three dungeon levels containing more than 80 locations, uncovering ancient treasures, solving riddles, and facing traps, undead guardians, and new monsters. The adventure includes maps, six pregenerated characters, new magic items and monsters, and detailed material for the Game Master. It can be played as a standalone scenario or added to an existing campaign, with an optional Horror and Madness mechanic for a more demanding challenge.

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