2009 · ソースブック（プレイを拡張するルール／オプション）
Hard Boiled Ideas: Cultures
This 17-page PDF provides methods for adding cultural complexity and diversity to races in Dungeons & Dragons 4th Edition. It explains how to identify cultural cues in an existing race description and use them to create distinct cultures within that race, with mechanical weight beyond descriptive flavor. The supplement includes a culture-building worksheet and example concepts such as elven tribes, apelord intellectuals, and a dark faerie interpretation of dwarves.
ダイス（主にd20）レベル制（XPを獲得してレベルアップ）属性／ステータス制（STR、CON、PERなど）
ゲーム情報（人数、プレイ時間、対象年齢、クレジット）の出典：BoardGameGeek。