01 · Political state

Paint it. Right here.

Pick a colour and click a country on the map. The editor does this state by state, with presets, quick fill and 80 steps of undo.

0 countries repainted
  • Ownership & control
  • Quick fill by admin level
  • Frontlines & strategic marks
  • Special zones
  • Releasable countries
  • Regional presets

02 · Cartography

Same borders. A different atlas.

Palettes, borders, labels and relief restyle the whole map at once.

  • Palette library
  • Borders & coastlines
  • City labels
  • Legends
  • Relief, oceans & lakes
  • River painting
  • Unit counters

03 · Context & data

Real networks under your story.

Roads, rail and resources for China, France, Germany, India, Japan, Russia, the UK and the US, global transport networks, and data you can map.

  • Roads
  • Rail
  • Airports
  • Ports
  • Energy
  • Industrial zones
  • Logistics hubs
  • Mineral resources
  • Population heatmap
  • Human development
  • Governance indicators
  • Night lights, 1930 & today
  • Ocean depth

On the map: Europe's main railways and largest cities.

04 · Starting worlds

Start from history. Or from nothing.

Every start is a project file: keep editing it, or export PNG and JPG at up to 4×.

  1. OpenProject file
  2. OpenProject file
  3. OpenProject file
  4. OpenProject file
  5. OpenProject file

One mod. One enormous map.

A separate, focused editor for the Historic Geographic Overhaul mod's 1936 world: repaint states, move ownership and cores, rename regions, export the whole map.

Down to the pixel.

Provinces stay exactly as the mod draws them — 5120 × 2560, pixel for pixel.

Open HGO Atlas
states
11,894
at sea
924
provinces
20,782

Your next world is waiting.

The Scenario Forge editor: TNO 1962 Europe with the colour library and paint tools

Good to know.

Do I need to install anything?

No. Both editors run in a modern browser, and your projects are saved as files on your own computer.

How are the two editors different?

Scenario Forge edits vector political maps across five starting worlds, with everything above. HGO Atlas edits one mod's native pixel map, state by state. Each has its own project files.

Can I share the maps I make?

Yes. The code is MIT-licensed; map data comes from sources such as Natural Earth, geoBoundaries and OpenStreetMap, which keep their own terms. See all data sources