![\"usage\"](\"https:\/\/raw.githubusercontent.com\/caeruleusDraconis\/world-gen\/main\/img\/entrypoint_real.png\")
<\/p>\n# WorldGen<\/p>\n
*WorldGen* is a mod for pre-generating Minecraft worlds, with a main focus on ***speed***.<\/p>\n
## Installation<\/p>\n
Just download the latest *WorldGen* JAR file for your ***exact*** Minecraft version.
\nAdditionally, ***always*** ensure that you are using the correct version for your modloader (Fabric\/Forge).
\nThen save the downloaded jar to the `mods` folder of your Minecraft instance.<\/p>\n
Finally, if you are on Fabric you also need to download the
\nFabric API.<\/p>\n
## Usage<\/p>\n
*WorldGen* can be used to generate more chunks for an **existing World**.
\nSimply select the world you want to expand from the World Selection screen and press the “WorldGen” button as seen below:<\/p>\n
<\/p>\n
By default, existing chunks will not be overwritten and only new ones will be generated.<\/p>\n
Also, please note that *WorldGen* uses **chunk** coordinates and **not** block coordinates! Since each Chunk
\nmeasures `16×16` blocks from a top-down view, you can easily convert between block and chunk coordinates by multiplying \/ dividing
\nby `16`. You can also find the current chunk position with the `F3` debug menu:<\/p>\n
![\"chunkPos\"](\"https:\/\/raw.githubusercontent.com\/caeruleusDraconis\/world-gen\/main\/img\/chunkPos_real.png\")
<\/p>\n
It is currently not possible to use *WorldGen* directly from the “Create New World” screen. Instead, you have
\nto first create the world normally, save and quit, and then open the world with *WorldGen*.<\/p>\n
Furthermore, we recommend storing your world on an SSD (at least for running *WorldGen*). Using a hard drive can lead
\nto scenarios where new chunks are generated faster than previously generated chunks can be saved. This can cause out-of-memory
\nerrors, since more and more chunks will accumulate in RAM as time goes on. Additionally, the performance
\nof the generator itself may be negatively affected. <\/p>\n
Although we consider *WorldGen* to be stable, it is recommended to back up your world before using this mod.
\nWe are not responsible if you lose your world because you ran into a bug!<\/p>\n
## Recommended settings<\/p>\n
When using *WorldGen*, there is no real upper limit on how many chunks can be generated.
\nHowever, we do not recommend using a radius of more than `512` chunks (which would be `8192` blocks in each direction).<\/p>\n
## How it works<\/p>\n
In contrast to other existing chunk pre-generation methods our mod does not require a full Minecraft server to be running.
\nInstead, a lightweight internal server is used to generate the chunks efficiently.<\/p>\n
This has the advantage of having a **dedicated GUI** and allows **multithreading**. On the downside,
\nthe world must be opened in a Minecraft client and cannot be loaded elsewhere while the chunks are being generated with *WorldGen*.<\/p>\n
## Supported version<\/p>\n
This table shows the current support status for the Minecraft version.<\/p>\n
| Minecraft Version | Status |
\n|——————-|———–|
\n| `1.20.x` | Supported |
\n| `1.19.x` | No future updates |
\n| `1.18.2` | No future updates |<\/p>\n
Note: For both `1.19.1` and `1.19.2` Use the WorldGen 1.19.x version. However, for Minecraft `1.19.3` and above, the specific WorldGen version for the Minecraft release is required!<\/p>\n
## FAQ<\/p>\n
**Q:** *The progress screen does not fit and is cut off!*<\/p>\n
**A:** Try reducing the GUI scale in the Minecraft video options until it fits <\/p>\n
—<\/p>\n
**Q:** *How do I center the square \/ rectangle \/ circle around my current position?*<\/p>\n
**A:** Click on the square button on the right of the Center chunk selection row. This will automatically load
\n the last position of the player.<\/p>\n
—<\/p>\n
**Q:** *Will Minecraft versions before 1.18.2 be supported?*<\/p>\n
**A:** No.<\/p>\n
—<\/p>\n
**Q:** *How do I reset chunks to their original state?*<\/p>\n
**A:** First of all: **BACK UP YOUR WORLD!** Afterwards: In the advanced WorldGen settings enable the “Please allow me to
\n break my world!” checkbox, then enable “Override existing chunks”. Also, we recommend using the “Mode: Coordinates”
\n in the main menu to reduce the chance of resetting chunks you don’t want to!<\/p>\n
—<\/p>\n
**Q:** *How do I make a perimeter \/ replace all blocks in chunks with air?*<\/p>\n
**A:** First of all again: **BACK UP YOUR WORLD!** Afterwards: In the advanced WorldGen settings enable the “Please allow me to
\n break my world!” checkbox. Then, set “Max. chunk status” to `structure_starts`. Next, enable “Override
\n existing chunks”. Finally, set “Fake chunk status” to `full`.
\n The generation will stop early and save the chunk as a fully generated one.
\n The “Max. chunk status” option allows stopping at different stages of generation, allowing for experimentation.<\/p>\n
## Mod incompatibilities<\/p>\n
This mod should be compatible with most mods (including those adding new biomes and dimensions).
\nHowever, mods that interfere with the Minecraft world generation process might pose a problem.<\/p>\n
### Currently known incompatible mods<\/p>\n
| Mod | Failure |
\n|—————|———————————————————-|
\n| **Starlight** | Chunks generated with WorldGen will have **no** lighting |<\/p>\n
# Acknowledgments<\/p>\n
Many thanks to the following projects for supporting open source development:<\/p>\n
– GitHub for free code hosting
\n– The Java profiler – JProfiler for providing a profiling tool<\/p>\n
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WorldGen is a mod for pre-generating Minecraft worlds, with a main focus on SPEED.<\/p>\n","protected":false},"featured_media":171393,"template":"","meta":{"_minecraft_slug":"world-gen","_minecraft_project_id":"cpNpM0go","_minecraft_author":"caeruleusDraconis","_minecraft_license":"Apache-2.0","_minecraft_downloads":18592,"_minecraft_follows":75,"_minecraft_client_side":"required","_minecraft_server_side":"unsupported","_minecraft_storage_type":"zip","_minecraft_archive_name":"world-gen.zip","_minecraft_size_bytes":2896244,"_minecraft_version_count":22,"_minecraft_updated_at":"2026-05-16T22:04:47.217011Z","_minecraft_date_created":"2022-06-26T21:01:18.059173Z","_minecraft_date_modified":"2024-05-25T17:05:27.483892Z","_minecraft_project_url":"https:\/\/modrinth.com\/mod\/world-gen","_minecraft_icon_attachment_id":171393,"_minecraft_imported_at":"2026-06-09T21:22:57+00:00","_minecraft_import_hash":"a4ddb760fe00df60dc1a75482d62f02f","_minecraft_versions":"","_minecraft_links":"","_minecraft_gallery":"","_minecraft_api_metadata":""},"mod_category":[97,104,92,159],"mod_loader":[99,106],"minecraft_version":[53,54,55,56,57,58,59,36],"class_list":["post-171392","mod","type-mod","status-publish","has-post-thumbnail","hentry","mod_category-fabric","mod_category-forge","mod_category-utility","mod_category-worldgen","mod_loader-fabric","mod_loader-forge","minecraft_version-1-18-2","minecraft_version-1-19","minecraft_version-1-19-1","minecraft_version-1-19-2","minecraft_version-1-19-3","minecraft_version-1-19-4","minecraft_version-1-20","minecraft_version-1-20-1"],"yoast_head":"\n