What problem does it solve? Game design documents often reach programmers with missing sections, vague rules, or contradictions with other systems, causing implementation delays and rework. This Skill audits a design document against an eight-section standard before handoff. ## Core Features & Use Cases - Completeness Checklist: Verifies the document contains Overview, Player Fantasy, Detailed Rules, Formulas, Edge Cases, Dependencies, Tuning Knobs, and Acceptance Criteria sections. - Consistency and Implementability Analysis: Checks that formulas match described behavior, edge cases align with main rules, dependencies are bidirectional, and no hand-waved sections remain. - Structured Verdict Output: Produces a review report with completeness score, issues, balance concerns, prioritized recommendations, and an APPROVED / NEEDS REVISION / MAJOR REVISION NEEDED verdict. - Use Case: Before handing a new combat system GDD to programmers, run this Skill to catch a missing Formulas section and a contradiction with the existing damage system, then route the verdict back into the systems index. ## Quick Start Ask the assistant to run the design-review skill on design/gdd/combat-system.md and report the verdict.