OpenFront Map Generator

Elevation source: Terrarium (Mapzen) — ~30m resolution SRTM v3.0 (NASA) — ~30m resolution

Resolution: Auto (optimal) Zoom 3 — ~20km/px (very low detail) Zoom 4 — ~10km/px (low detail) Zoom 5 — ~5km/px (low detail) Zoom 6 — ~2.5km/px (medium-low) Zoom 7 — ~1.2km/px (medium) Zoom 8 — ~600m/px Zoom 9 — ~300m/px Zoom 10 — ~150m/px Zoom 11 — ~75m/px Zoom 12 — ~40m/px Zoom 13 — ~20m/px Zoom 14 — ~10m/px (high detail)

Map size: Auto (512-1024px) 512px — 2-8 nations 768px — 5-12 nations 1024px — 12-29 nations 1536px — 2-26 nations 2048px — 4-61 nations ⭐ 2560px — 15-50 nations 3072px — 20-70 nations 4096px — 30-100+ nations ?

Load rivers from OpenStreetMap (may be slow for large areas)

Water data failed to load

All OpenStreetMap servers are unavailable. The map was loaded without rivers and lakes.

Try again Continue without water

How it works:
Each undo step stores compressed PNG images of all layers. The system automatically compresses data to save ~60% memory.

Tips:
• Lower limit = less memory usage
• Fewer layers = less memory per step
• Smaller canvas = less memory per step

The paint editor now has full undo/redo support for all actions including painting, layers, and rivers.

By default, the last 50 steps are kept in memory. Each step stores compressed canvas data for all layers.

You can adjust the history limit anytime using the ⚙️ settings button next to Undo/Redo.

Auto (512-1024px)

10-30 nations · Balanced maps

512px

2-8 nations · Very small, quick games

768px

5-12 nations · Small regional maps

1024px

12-29 nations · Medium regional maps

1536px

2-26 nations · Most flexible

2048px ⭐

4-61 nations · Most popular

2560px

15-50 nations · Very large maps

3072px

20-70 nations · Huge maps

4096px

30-100+ nations · Massive (slow)

Tips:
• Start with Auto or 1024px for your first maps
• Use 2048px for most serious multiplayer games
• Only use 4096px for truly massive world maps
• Based on 70+ official OpenFront.io maps

Choose an aspect ratio to create a blank map filled with ocean. You can then use the Paint tool to add terrain.

Aspect ratio

16:9 — Widescreen

1920×1080 px · Similar to "Two Lakes"

4:3 — Classic

1600×1200 px · Traditional map format

1:1 — Square

1400×1400 px · Balanced gameplay

2:1 — Panoramic

2000×1000 px · Similar to "Pangaea"

3:2 — Standard

1800×1200 px · Versatile format

Share your map with the OpenFront community! Your map will be reviewed and added to the public gallery.

Map Name *

Your Nickname (optional)

Description (optional)

I agree that this map is open source and can be freely used, modified, and distributed by others, including for commercial purposes on openfront.io

What happens next:
1. You'll download a proof-of-authorship image
2. We'll ask about copyright/resources used
3. Your map will be submitted for review
4. Once approved, it appears in the gallery

This doesn't guarantee authorship but adds confidence that you created this map

Copyright & Resources

Did you use any copyrighted resources (images, textures, etc.) to create this map?

No, it's original Yes, I used resources

List resources and their licenses

View Pull Request on GitHub