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 (Starfinder)
A bestiary for the Starfinder Roleplaying Game, featuring nearly 300 science-fiction creatures and menaces ranging from CR 1/2 to CR 30. It includes playable races, cosmic horrors, alien invaders, starship-scale creatures, template grafts, and versions of classic monsters alongside original creations. Additional sections cover Great Old One cults, setting-specific creatures, high-tech traps and hazards, and creature indices by type and Challenge Rating. The book also provides spells, feats, and expanded rules for aetherite radiation, vacuum, and related hazards.
属性／ステータス制（STR、CON、PERなど）ダイス（主にd20）ポイント制（ポイントを割り振ってスキルや能力を得る）
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。