The Seed Finder works backwards: instead of entering a seed to see its world, you pick what you want near your spawn — a village, ancient city, trial chambers, monument — or (experimentally) a biome’s climate — and it scans seeds to find ones that qualify. Enter the exact seed into any world or the Seed Map to check it.
How to use
- Set the start seed (leave 0 to scan the lowest seeds first).
- Choose Search by: Structure for deterministic structure-near-spawn seeds, or Biome (Beta) for approximate climate screening.
- Pick the structure or biome target, the max distance (chunks), and how many seeds to scan.
- Press Search — candidate seeds are listed. Click Open in Seed Map to inspect one before starting a world.
Why “deterministic” matters (structures)
Every seed’s structure layout is a pure function of the seed, so structure scans are exact and reproducible — the same search always gives the same matches, identical on Java and Bedrock. Scans run in a background worker, so the page stays responsive.
Biome search — honest limits
The biome mode screens seeds with a simplified climate model: a seed-driven, smooth noise field for temperature, humidity and continentalness, mapped to a target biome’s typical climate window (e.g. cherry grove = warm & humid inland). Because it doesn’t reproduce Mojang’s exact multi-noise biome generator, hit rates and exact biomes can differ from the real game. It’s useful for shortlisting candidate seeds to try, not for guaranteeing a biome.
Common questions
How are distances measured? Structure distance is from world spawn (chunk 0,0) to the structure’s generation-attempt block, in chunks then blocks.
Why does the biome search warn “verify in game”? The approximate climate model is not the real biome generator — always load the seed in Minecraft before committing to a playthrough.