Engine-ready UI

Unity, Unreal, Godot, and Phaser JSON mappings describe supported hierarchy, frames, and properties. Inspect warnings for unsupported features, interactions, and unresolved asset bindings. JSON handoff alone is not a complete native runtime.

Unity JSON + assets contains metadata and sprites rather than generated prefabs. Unreal packages include a scoped raster UMG consumer and native manifest; the dialog reports structural preflight support and blockers. Rive handoff contains layout data and assets rather than a compiled .riv file.

Runtime-ready export can block unsupported content; warning-oriented handoff can retain warnings for downstream work. Resolve missing assets and native blockers, then test a representative export in your engine for sizing, nine-slice behavior, and interactions.