2003 · ソースブック（プレイを拡張するルール／オプション）
Big Nasty Aliens
This roleplaying game supplement expands a science-fiction campaign with additional alien races, equipment, creatures, plants, and adversaries. It provides new options for developing player characters and encounters, along with rules and resources for Gamemasters. The material is dual-statted for Silhouette and OGL-based games and requires the appropriate core rulebook.
ダイス（主にd6）
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。