deep underground middle lie subterra bravo ndash topsecret military installation fill unspeakable horror science go wrong impenetrable depth master fortified facility conduct gruesome experiment innocent prisoner cruelly abduct ordinary livesyou captive subterra bravo imprison facilitys deep laboratory hall nightmare know level singular goal escape evade human inhuman denizen subterranean labyrinth entire base lock seal rest short tormented life work fellow prisoner overcome subterra bravos endless peril use secure escape ultimately chance survival depend manage great weapon great threat fear itselflevel escape semicooperative storydriven survivalhorror board game ndash player nerve steel willingness confront impossible

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