NEW
Meld Farmlands (1.8) is live: real field parcels, crop plots, wildflower meadows, rocks & bushes
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Meld is a free, open source real-world Minecraft world generator built on Arnis.
*About 2x on the same area. The real win is scale: whole countries built as one seamless world.
A single Arnis run builds the whole map one step at a time, on a single worker. Meld splits it into tiles and runs many workers at once, spreading the job across your CPU.
Five steps, from a selection on the map to a world you can open.
Draw a rectangle on the map or search a place.
Meld auto centers the origin on your selection, snapped to a region corner, then tiles the area into region aligned cells. Every block is measured from that origin, so the whole project stays on one grid.
A quick terrain survey locks one height range and one seed, shared by every cell, so there are no cliffs.
Cells queue and run at the same time, each Arnis instance using the global origin, seed and elevation lock.
Each tile's finished region files copy into the final world. The overlap buffer is thrown away, and a safety check blocks a broken merge.
The result is one Minecraft world you can open and walk, with no seams, no cliffs and no missing regions. Full walkthrough →
Cells own whole region files, so every seam falls on a region boundary and the merge keeps complete regions.
A worker pool that aims for about 8 and scales up to 16 runs Arnis instances in parallel. A Recommend check tunes it to your CPU, RAM and disk.
Meld downloads the area's OpenStreetMap data once and shares it to every cell, so parallel runs never hit the Overpass rate limit.
Chunk lighting is baked in, so distant chunks render lit in Distant Horizons and Voxy without flying the whole world.
Many small bounded region writes instead of one multi gigabyte serial flush of a single giant world.
One surveyed height range maps the same way in every cell, so the terrain has no terraced cliffs.
A shared seed makes scatter and building choices deterministic, so a feature on a seam matches both sides.
Forests, parks and plants use a position seeded RNG, so trees line up across tile borders.
Re-run only the cells that are not merged, or click one cell to regenerate it. Crash and overnight safe.
Point the save folder at your saves directory, and each world is its own named subfolder.
Estimated size, a live elapsed timer, and a final report with the actual time and on disk size.
A one click check reads your CPU, RAM and disk speed and recommends the best cell size and worker count.
Run it locally, draw an area, and turn the map into Minecraft.