From Underground

A third-party monster manual for Old-School Essentials and other old-school fantasy role-playing games, featuring creatures and factions that dwell underground. Its entries include fungal trolls, cave-haunting spirits, a criminal gang of floating eyeballs, and a cult devoted to a flaming green skull, with details and hooks for use in adventures.

속성/스탯 기반(STR, CON, PER 등)레벨 기반(XP를 획득하여 레벨업)클래스 기반(파일럿, 마법사, 과학자 등)