Short description (CurseForge field)

Spawn a separate world for any biome you can describe. Pick from five built-in biomes (plains, desert, taiga, volcanic, default), or define your own custom biome with 17 terrain parameters in a config file. One command, one world, one biome. Players can teleport in and out at will. Created worlds are saved between restarts.

GlymeraWorldGen - One Command, One Biome, One World

What is GlymeraWorldGen?

GlymeraWorldGen is a server-admin tool that turns biome variety into separate, persistent dimensions you can step in and out of. Spin up a desert world, a taiga world, a custom snow-and-quartz "world_8" — all from the same lobby, all on the same server, all from a single command.

Each world is a real Hytale world: it generates new chunks lazily, it remembers the players who slept in it, and it lives in universe/worlds/<name>/ like any other. The plugin's contribution is to make it trivial to assign a biome to one, change that biome later, and define your own biomes in a config file using 17 terrain parameters.

This plugin is OP-only by design. All commands require server-operator permission.

Commands

`/bw create <name> <biome>`

Create and load a new world named <name>, immediately assigning the given biome. The world's spawn region is generated in that biome from the very first chunk — players who teleport in land in the right terrain.

<biome> is one of:

none — create the world without assigning a biome. Useful if you want to load the world first and pick the biome interactively later (with /bw biome). The world generates with Hytale's default rules.
plains — green, grassy, gentle hills (Hytale Zone1).
desert — sand, sandstone, dry shore (Hytale Zone2).
taiga — cold, conifer-friendly terrain (Hytale Zone3).
volcanic — basalt, magma, hot shore (Hytale Zone4).
default — the unmodified Hytale four-zone mix (continents containing all biomes).
Any custom biome key you defined in config.json (see below).

If you mistype the biome name, the command refuses to create the world and lists the valid options.

`/bw tp <name>`

Teleport to a world's spawn point. Your previous world is remembered, so /bw back returns you to where you came from.

`/bw back`

Return to the world you were in before your last /bw tp. Useful for quick "step into this world to look around" admin loops.

`/bw biome <biome>`

Change the biome of the world you're standing in. Newly-loaded chunks use the new biome; chunks that were already generated keep their old terrain.

`/bw biomes`

List all available biomes (built-in + custom from config.json).

`/bw list`

List every world the plugin is managing, with its current biome assignment.

`/bw delete <name>`

Delete a managed world (the directory under universe/worlds/, the plugin's record of it, and any chunks). Requires confirmation.

`/bw reload`

Reload config.json from disk — useful after editing custom biome definitions without restarting the server.

Custom Biomes

The plugin ships with five built-in biomes, but the real power is in defining your own. Open plugins/GlymeraWorldGen/config.json after first run and you will find a customBiomes section with 10 ready-to-use presets (world_1 to world_10) plus an inline _howTo and _parameters documentation block.

Each custom biome is described by up to 17 parameters:

Parameter	Description
`surface`	Top layer block (e.g. `Soil_Grass`, `Soil_Sand_White`, `Rock_Quartzite`). REQUIRED.
`sub`	Layer immediately below surface (e.g. `Soil_Dirt`, `Rock_Sandstone`). REQUIRED.
`base`	Deep underground fill block (e.g. `Rock_Stone`, `Rock_Basalt`, `Rock_Bedrock`). REQUIRED.
`surfaceDepth`	Thickness of the surface layer in blocks (1-50, default 1).
`subDepthMin` / `subDepthMax`	Random-range thickness of the sub layer in blocks.
`heightMin` / `heightMax`	Lowest / highest terrain in blocks (1-319). Wide range = dramatic mountains and valleys; narrow range = mostly-flat.
`noiseType`	`SIMPLEX` or `OLD_SIMPLEX`.
`noiseScale`	Zoom level. Smaller = wide smooth hills, larger = tight chaotic terrain.
`noiseOctaves`	How many detail layers to stack (1-8). More octaves = more fine detail.
`noisePersistence`	How strongly each octave contributes (0.01-1.0). Higher = rougher.
`lacunarity`	How fast each octave gets finer (1.0-4.0).
`fractalMode`	`FBM` (natural rolling hills), `BILLOW` (soft puffy shapes), `RIDGED` (sharp mountain ridges).
`waterLevel`	Sea level (0-319). Set to `0` for a waterless world.
`waterFluid`	Which fluid fills the sea level (e.g. `Water_Source`, `Lava_Source`).
`tint`	Hex color tint for grass / surface ambient lighting.

Once defined, the biome is selectable by its key:

/bw create my_island_world world_3

The custom biome's terrain rules are applied via reflection on the loaded chunk generator — Hytale doesn't natively support per-world biome overrides, so the plugin reaches into the running generator and rewrites its layer/heightmap/noise parameters in place.

Typical Workflow

# 1) Edit plugins/GlymeraWorldGen/config.json — define a biome under customBiomes
# 2) Reload the config without restarting the server
/bw reload

# 3) Create + immediately enter a desert world
/bw create scorched_dunes desert
/bw tp scorched_dunes

# 4) Decide it should actually be your custom snowy biome
/bw biome world_8

# 5) Hop back to the main world
/bw back

# 6) See what worlds you have
/bw list

Compatibility & Caveats

Existing worlds in universe/worlds/ are not touched by the plugin. The plugin only manages worlds it created itself (or worlds you registered through /bw create for the first time).
One world per command call. This isn't a bulk-create tool; the workflow assumes you compose your set of worlds deliberately.
Memory usage scales with the number of loaded worlds and the number of players in each. Don't open dozens of worlds on a 4 GB server.
Persistence is automatic. The world's chunks save to disk just like the main world, and the plugin's state (which biome each world is on) lives in plugins/GlymeraWorldGen/config.json.

Permissions

All /bw … commands require server-operator permission (*). Non-OP players cannot create, delete, or biome-swap worlds. They can, however, freely use any of the worlds an OP teleports them into.

Asset Pack

The plugin ships its own runtime asset pack at mods/GlymeraWorldGen/ containing the Server/World/Default/Mask.json and Server/World/Default/Zones.json files Hytale needs to apply biome MaskMappings. The pack is regenerated on every plugin load — there's nothing to maintain by hand.