2018 · ソースブック（プレイを拡張するルール／オプション）
Alien Bestiary Companion
This Pathfinder Roleplaying Game bestiary adds more than 150 science-fiction and space-themed creatures, ranging from playable alien races and allies to cosmic horrors and apocalyptic threats. The collection includes monsters from the Legendary Planet and Aethera settings, mythic versions of classic foes, and original creatures such as asteroid worms, meteor dragons, and supermassive singularities, with challenge ratings from 1/2 to 27. Appendices cover alien and Aetheran creatures, monster indices by type and challenge rating, science-fiction traps and hazards, and rules for gravity, vacuum, radiation, and other space-travel conditions.
スキルベース（スキルを購入または獲得）属性／ステータス制（STR、CON、PERなど）レベル制（XPを獲得してレベルアップ）
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。