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CrazyGamesUp

2D Game Map Generator

Generate seeded island and overworld maps with water, sand, grass, forest, mountain, snow, and settlement tiles.

Frequently Asked Questions

How is the terrain generated?

The tool blends seeded value noise at several scales, applies radial edge falloff when enabled, and classifies elevation and moisture into terrain types.

Can I generate the same world again?

Yes. Keep the same seed and settings to reproduce the same terrain, settlements, and roads.

What does island edges do?

It lowers elevation toward the map boundaries, encouraging surrounding water and creating island-like continents instead of clipped land.

How are settlements positioned?

Settlements favor passable grass or sand cells and keep distance from existing settlements. Roads then connect consecutive settlements with simple routed paths.

What data is included in JSON?

The export contains seed, dimensions, settings, terrain legend, a two-dimensional tile ID grid, and settlement coordinates.