Seed Finder Mod

This mod does not find seeds of existing servers, that is seed cracking or seed reversal

Seed Finder Mod adds a new world type that allows you to specify basic structure and biome criteria. Once a seed that matches that criteria is found a new dimension is added with the overworld of that seed and you are given a "seed book" with details about the seed and criteria. You can then fly around, decide if you like the seed and add any notes to the book. It is recommended to put seeds that you would like to short list in an ender chest. They can be reloaded later by holding the seed book and using the /findseed load command.

Important: Do not use the seed finder world for playing minecraft. Create a new world with the seed you found instead.

Getting Started

After the mod is installed create a new world and select the "Seed Finder" world type in "More options...". You can not, and should not, use an existing world to search for seeds.

Once the world has been created use some of the /findseed criteria commands to specify which structures and biomes you would like. Start with minimal criteria (eg a village within 100 blocks) you can add criteria later.

After you've set some criteria use /findseed next or /findseed next_bedrock. Once a seed is found you will be placed in the overworld at world spawn. You can simply run the "next" command again to go to the next seed that matches.

Each time you are placed in a world you'll get a book with the seed number and some details. Keep the seeds that you like in an ender chest so you can review them later and decide which one you want to use later.

Search Criteria Examples

Adding criteria for a village start <50 blocks from 0,0:

/findseed criteria add structure java_village 50 spawn

Adding criteria for a woodland mansion <150 blocks from previous structure criteria location:

/findseed criteria add structure java_woodland_mansion 150 criteriaIdx 0

Adding criteria for badlands biome somewhere within 500 blocks

/findseed criteria add biome minecraft:badlands

Adding criteria for 20% jungle (jungle, sparse or bamboo)

/findseed criteria add biome #minecraft:is_jungle 20

Removing criteria

/findseed criteria remove biome 0

/findseed criteria remove structure 1

List current criteria

/findseed criteria list

Clear criteria

/findseed criteria clear

Note: Changing criteria will stop any search in progress.

Running Search

Find next seed that meets the criteria and move the player into that world with java structure locations

/findseed next

Find next seed that meets the criteria and move the player into that world with bedrock structure locations (actual structures will generate differently in bedrock but will be in the same locations)

/findseed next_bedrock

Other Function(s)

Create a new overworld dimension with a specfic seed and move the player into that world. (java structures)

/findseed load 69420

Create or load an overworld dimension for the seed book you are holding in your main hand.

/findseed load

Tips / Notes

Spawn is currently assumed to be 0,0. For some searches spawns far for 0,0 are possible.

It is possible to set impossible criteria, like having an outpost within 100 blocks of a java village. It is recommended that you add criteria gradually to refine the type of seed you want.

If you want an island seed try set large amount of ocean eg:
/findseed criteria add biome #minecraft:is_ocean 80

Each time you are teleported into a world you are given a book which contains the seed, the locations of the structures in the search criteria and details about the criteria used in the search. You can use /findseed load while holding one of these books to revisit a world. It is recommended to put seeds on your "short list" by putting them in an ender chest.
You can then reload them later and decide which one you want to use.

Each overworld is saved as a different dimension with the seed number in its name. You can use "Open world folder" in the world edit screen to see all the seeds. These seed_ folders can be deleted to save space.

The reason for requiring the "Seed Finder" world type is to protect people from messing up the worlds they play in. Don't just start playing in the seed finder world. Create a new world with the seed you found.

The seed search starts using the lower 48 bits of the last seed loaded. You can use the load command to change the current seed to anything you want in case you want to start your search at a specific seed