Draw roughly, then let the land settle: Natural keeps your shape but gives it real coasts, broken ranges, ridges and worn valleys. Restore brushes back to the land as generated.
Draw
Left mouse or pen. Shift + click draws a straight line from the last stroke.
Move the map
Hold Space and drag, or drag with the right or middle button. Arrow keys also move it.
Zoom
Mouse wheel or pinch. +-, F fits the map.
Brush size
[], or Alt + wheel.
Undo, redo
Ctrl+Z, Ctrl+Y (or Ctrl+Shift+Z).
Tools
The letter on each tool picks it.
Regions
Use Open region and click the continent. Draw ground with the quick look; Full build adds erosion, rivers, towns, roads and woods. Towns and roads need a full build first.
Layers
New strokes go on the highlighted layer. The eye hides a layer (left out of the world), arrows reorder, double-click renames.
Compare
Hold Q (or the Compare button) to see the land as generated.
Protect
Keeps a brush off part of the map: the coastline, land or sea, or (in a region) heights and slopes. Shaded parts are protected.
Pictures
File, Trace or convert a picture: lay a sketch over the map to trace, or turn it into land, mountains or lakes, then run Natural over it.
Biomes
36 real kinds of place, from ice cap and tundra to laurel forest, savanna and jungle. Hover the map to see which one is there and a real place like it; paint them in a region with Ground cover.
Saving
Edits are kept in this browser. File, Save edit file downloads them to share or put in the repo.