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Bedrock Seedcracker

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Bedrock Seedcracker

By g_umark

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Cracks the seed using only bedrock!

Mod Loaders
Minecraft
26.3
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About

Description

BedrockCracker (gumark fork)

An updated fork of MiranCZ's BedrockSeedCracker, ported to modern Minecraft and tuned for speed.

A relatively small Fabric mod that finds the seed of the world you are playing in by analyzing bedrock patterns — no operator permissions, no cheats, works even on vanilla servers. Just uses the bedrock block; Java Edition only.

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Requirements
Minecraft 26.3
Fabric Loader 0.19.5+
Fabric API 0.161.0+26.3
Java 25+ (for building; playing just needs a matching launcher)

Usage

  1. Install the mod with Fabric Loader + Fabric API.
  2. In your world, visit both the overworld and the nether. The mod silently collects bedrock patterns around you (512 pieces for the overworld, 128 floor + 128 roof for the nether). It tells you in chat when everything is collected.
  3. Run /crackseed and wait. Progress is posted to chat with timestamps, percentages and an ETA; the result (or results) is printed when done.

Credits

License

MIT — © 2026 gumark