2020 · ソースブック（プレイを拡張するルール／オプション）

Ex Umbra

A collaborative dungeon generator for creating fictional caves, labyrinths, and tombs. Players reconstruct an underground lair from unreliable rumors, discussing its dangers and treasures while drawing a shared map. Players set the dungeon’s size and difficulty, establish its entrance and heart, then play Dungeon Cards during a series of exploration turns. Tokens reveal and detail threats and rewards, while special turns introduce a large-scale change and focus on the dungeon’s heart. The finished map can stand alone as a fictional setting or serve as material for stories and role-playing games. Supports solo play or groups of up to four players, with sessions lasting one to four hours.

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