New to the map generator? Read this first: what a run does, what the knobs mean, and how to make a map you actually want.

Picks the most-constrained tile first, then ripples outward so neighbours always exist before they're needed.

Author rivers, paths, and biome transitions on the canvas; the constraint compiler turns brushstrokes into per-tile masks.

Each new tile is generated against a 256-px strip of its already-rendered neighbour, locking edges without locking interiors.

The seed image is produced by the same pipeline as the output — kills the style drift you get from foreign-pipeline seeds.

Style locked at ipa=0.6 (CLIP), structure conditioned via ControlNet Tile / Union — the combo that crossed the seam-quality gate.

Per-pixel timestep schedule replaces hard mask binarisation, so painted features blend instead of cutting.

Per-tile latents are batched, normalised against the anchor's statistics, then decoded — kills tone drift across same-biome tiles.

Free +0.55 on the seam quality gate. CPU histogram match against the anchor tile, runs in <100ms.

Tier 0 pixel checks (ΔE, gradient, palette, pHash) reject 70% of bad tiles for free; VLM only sees the ambiguous 30%.

Plain-language definitions for the terms surfaced in the painter UI — denoise strength, anchors, seams, ΔE, and more.