2006 · 资料书（用于增强玩法的规则/选项）
Fortress
A sourcebook for d20 Modern and Haven: City of Violence covering the design, construction, and use of modern fortifications. It provides guidance for creating fortified buildings and adapting existing structures, along with rules and advice for attacking, defending, breaching, and reducing them in play.
技能型（购买或获得技能）基于属性/数值（STR、CON、PER 等）等级制（获得经验值并升级）
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。