2007 · 资料书（用于增强玩法的规则/选项）
Prototype: Galactic Space Ace
This d20 Modern supplement introduces a pulp-era space-faring hero class: an explorer-scientist who represents Earth among alien civilizations and confronts extraterrestrial creatures and hostile environments. It adds the Jet Pack Operation and Advanced Jet Pack Operation feats, along with jetpacks, rayguns, spacesuits, and spacecraft. The seven-page PDF provides material for science-fiction campaigns and settings.
技能型（购买或获得技能）基于属性/数值（STR、CON、PER 等）等级制（获得经验值并升级）
免费，支持网页、Android 和 iOS
用 Ludoya 玩 Prototype: Galactic Space Ace
游戏信息（人数、游戏时长、年龄、制作人员）来自 BoardGameGeek。