What problem does it solve? Game design decisions often rely on vague opinions instead of structured evidence, leading to unvalidated concepts, retention problems diagnosed too late, and proposals that lack proof of play. This Skill turns game design work into contract-driven workflows with timestamped evidence, player promise contracts, and pre-registered validation criteria. ## Core Features & Use Cases - Evidence-First Game Analysis: Convert gameplay recordings, screenshots, and trailers into timestamped evidence reports with Hook/Loop/Link/Surprise diagnosis and prioritized issue cards. - Concept Architecture & Validation: Transform one-line game ideas into player promise contracts, core loops, scope gates, and testable validation plans with success metrics. - Experience Density Optimization: Diagnose retention and pacing problems using CLP/SF/EB/AR/MD-min measurements, then generate weekly A/B experiment plans with instrumentation and rollback gates. - Use Case: A team with a prototype showing dropping day-1 retention uses the workflow to analyze playtest recordings, diagnose soft friction in the tutorial, design three A/B variants with telemetry events, and assemble a decision-ready greenlight proposal backed by evidence. ## Quick Start Ask the agent to analyze your gameplay recording into a timestamped evidence report with issue cards and validation recommendations.