2015 · ソースブック（プレイを拡張するルール／オプション）
GURPS Aliens: Sparrials
This GURPS supplement details the sparrials, small, furry aliens known for their deft hands, keen senses, wanderlust, individualism, and cultural pride in theft. It presents a full racial template along with information on sparrial mindsets, family, law, economics, art, folklore, and history. The supplement also covers their technology, personal gear, starships, names, pets, variant races, racial martial arts, and suitable professions. It supports creating sparrial player characters and NPCs, using them in science-fiction or fantasy campaigns, and incorporating their society into other game systems.
スキルベース（スキルを購入または獲得）ポイント制（ポイントを割り振ってスキルや能力を得る）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。