Procedural generation2025

Minecraft Seed Finder

Brute-force search for Minecraft seeds whose strongholds are ringed by specific structures.

MC 1.21

A brute-force seed search over Minecraft’s world generation. Python drives four generated C programs built against the Cubiomes library, scanning ten thousand regions per seed to find worlds where a stronghold sits within 500 blocks of a required set of structures.

ContributionSole author.

10,201Regions scanned per query
90,601Nether regions per fortress query
500 blocksStructure distance limit
1.21Minecraft version

How it works

  • Python writes four complete C programs into a Cubiomes checkout, compiles them, and drives them as subprocesses.
  • All four C programs target Minecraft 1.21 world generation.
  • Scans 10,201 overworld regions per query and 90,601 nether regions for fortress queries.
  • Structure distance limit of 500 blocks around each of three checked strongholds.
Minecraft Seed Finder — Alejandro Newport