What problem does it solve? Game developers describe what assets they need but rarely specify the technical requirements that make art engine-ready, such as keyable backgrounds, tileable textures, loopable animation frames, and 9-slice-safe UI panels. This Skill encodes those unstated defaults plus a verification workflow so generated sprites, tiles, UI, and FX arrive usable without manual cleanup. ## Core Features & Use Cases - Engine-Ready Defaults: Automatically delivers isolated subjects on a #FF00FF keyable background, uniform sprite-sheet cells, seamlessly tileable terrain, and localization-safe UI with no baked text. - Spec Checklist and Blind Verification: Builds a private checklist of stated and implied requirements, describes generated images blind, and diffs against the spec with strict pass/fail judgment. - Escalation and Honest Reporting: Retries with more concrete visual prompts, falls back to compositional PIL assembly when generators repeat failures, and flags every unfixed defect at delivery. - Use Case: When asked for a walking character sprite, the Skill produces a cleanly looping frame sequence on a chroma-key background with uniform cells, verifies each frame against the checklist, and reports any residual defects. ## Quick Start Generate a game asset such as a character sprite or tileset and apply the core engine-ready defaults and verification checklist before delivering the files.