2026 · コアルール（プレイに必要な最小限）

GURPS Basic Set Revised (Fourth Edition)

A universal roleplaying system for campaigns in any genre, setting, or period. The rules cover character creation and equipment, physical feats and combat, vehicles and technology, creatures, templates, and world design in one volume. Revised content clarifies rules, incorporates errata and frequently asked questions, and adds material drawn from later game and magazine releases while remaining compatible with Fourth Edition supplements. Detailed organization, cross-referencing, charts, and tables support both players and Game Masters.