2017 · ソースブック（プレイを拡張するルール／オプション）

Smuggler's Tunnel: Bonus Content for City Builder

This rules-free supplement describes a smuggler’s tunnel, a hidden passage that can be found beneath or around a settlement. It is formatted as a standalone community location and can also be used as additional content for a broader guide to designing towns and other places. The setting is suitable for ancient, Dark Ages, medieval, Renaissance, fantasy, and other role-playing campaigns.