Free browser-based tool
Procedural Hex Map
Generator
One click builds a whole world: mountain ranges, rivers, kingdoms, named towns and a DM note for every place worth visiting. Steer it with a live preview, then make it your own.
Free to use. No signup required.
A generated Pro world, straight out of the generator.
How It Works
The Generate workspace: pick a template, adjust, and watch the preview.
Steer the world before you make it
Generate opens a workspace with a live preview. Every choice redraws it, so you can shape the world before you commit.
- ◆ Start from one of 7 templates, then change the land, climate and peoples
- ◆ Paint land, sea, mountains or a hotter, colder, wetter or drier climate where you want them
- ◆ Reroll, Surprise me, or roll the dice on a single topic. Advanced mode lets you lock what you want to keep
Two rivers joining below a mountain range, with named sites along the way.
Geography that makes sense
The generator builds the world the way geography does: land first, then mountains, climate, rivers and the people who settle along them.
- ◆ Mountain ranges swell into massifs and peak along their spines, with rain shadows behind them
- ◆ Rivers run downhill, grow as they join, and end in lakes, deltas or the sea
- ◆ Jagged coasts with peninsulas, fjords and reefs, glaciers in the cold and oases in the desert
Two neighbouring realms, each drawn with its border and its name.
Kingdoms, cultures and names
Every generated world comes with peoples. Each culture names the places it holds in its own tongue, and its realms are drawn as named regions.
- ◆ Towns and cities where people would settle, with farmland around them
- ◆ Straight roads between towns, trails that join them, mountain passes and sea lanes
- ◆ Choose how many cultures and a naming style: harsh, northern or flowing
A generated city and its DM note.
A DM note for every place
Every settlement and site the generator places comes with a DM-only note: what is there, who claims it, and a hook to use at the table.
- ◆ Ruins, lairs, stone circles, shipwrecks, hazards and more, each with its own note
- ◆ Notes are hidden from players in the shared view
- ◆ Edit, rewrite or delete any of them like a note you wrote yourself
Pro: deeper worlds
World History — give the world a past. Wars, plagues, eruptions and floods leave ruins and battlefields behind, told year by year in a Chronicle note. The world also gets hazard zones and magical sites such as portals and ley lines.
Underdark levels — up to three levels of branching caves beneath the surface, with underground lakes and rivers and drow, duergar and svirfneblin holds named in their own tongues. Learn about Underdark layers →
Bigger maps — generate worlds up to 200×200 hexes, with a harbour at every coastal town.
Then make it yours
Generation is a starting point. Everything it makes is ordinary map content: paint over any hex, rename any place, move a road, rewrite a note. Try it here: pick a terrain and drag to paint.
Generate Your First World
Open the editor, pick a template, click Generate. Your world is ready in seconds, with no signup, no download and no cost.
Frequently Asked Questions
How does procedural hex map generation work in Hexer?
Hexer builds a world in the order geography does. It lays out the land, raises mountain ranges, works out climate from latitude, height and prevailing winds, runs rivers downhill into lakes and seas, then settles peoples where the land supports them: towns, roads, realms and the names they give their places. Generating a map takes a second or two.
Can I control what gets generated?
Yes. The Generate workspace shows a live preview of the world your choices make. Start from one of 7 templates, adjust the land, climate and peoples, paint where you want land, sea, mountains or a different climate, and reroll until you like it. Generate places exactly the world in the preview.
Can I edit the map after generating it?
Absolutely. Generation is a starting point. Paint over any hex, rename places, move roads and rivers, and edit or delete any generated note or region. Everything the generator made is ordinary map content.
Is the hex map generator free?
Yes. Free maps up to 40×30 hexes get the full surface world: every surface terrain, rivers, roads, kingdoms, culture names and DM notes. Pro raises the limit to 200×200 and adds generated underdark levels, World History, and harbours at coastal towns.
What templates are available?
Island Kingdom, Continental, Archipelago, Frozen North, Desert Wasteland, Mythic Realm, River Valley. Each is a starting point you can change in the workspace, and every seed makes a different world.