# 风云Ⅳ — fengyun434 / Fengyun IV

> slug: `fengyun434` · browser status: `playable` · native port: `40011`

Produced by Sumxin's Fengyun studio, part of this project's "Fengyun" wuxia engine family shared with fy2, fy2005, fy2qh, fy3xd, and fy3dz — each a separate content branch from a different site or era built on the same core engine. Set in a jianghu drawn from Gu Long's wuxia novels, players begin as an ordinary commoner just entering the martial world, choosing an ethnicity (Han, Miao, Manchu, or Mongol) that shapes starting attributes and birthplace.

## Play in the browser (WebAssembly)

- Landing page (description + notes): https://mudlibs.fluffos.info/fengyun434/
- Play now (boots the WASM driver): https://mudlibs.fluffos.info/fengyun434/play.html

## Download source ZIP

- Same-origin ZIP (trimmed source tree, no need to clone the whole repo):
  https://mudlibs.fluffos.info/fengyun434/fengyun434.zip
- GitHub tree: https://github.com/fluffos/mudlibs/tree/main/libs/fengyun434
- README: https://github.com/fluffos/mudlibs/blob/main/libs/fengyun434/README.md
- Restoration notes (NOTES.md): https://github.com/fluffos/mudlibs/blob/main/libs/fengyun434/NOTES.md

## Run natively with FluffOS

1. Build a current FluffOS driver from https://github.com/fluffos/fluffos
   (native `build` / `build-debug`; see that repo's docs).
2. Download and unzip `fengyun434.zip` from the URL above (or clone
   `https://github.com/fluffos/mudlibs` and use `libs/fengyun434/`).
3. From the unzipped lib directory, ensure `config.fluffos` points
   `mudlib directory` at this tree (the checked-in file may contain a
   maintainer-local absolute path — edit it to your extract path).
4. Start the driver:

```bash
/path/to/fluffos/build/src/driver config.fluffos
```

5. Connect a UTF-8 MUD client to `127.0.0.1:40011`.

- Admin / wizard login: `fluffos` / `Mud@2026`
- If you host this on a public network, change the published default
  admin password before opening the port.

## Machine-readable catalog

- Site-wide catalog: https://mudlibs.fluffos.info/games.json
- Site-wide LLM overview: https://mudlibs.fluffos.info/llms.txt
- This file: https://mudlibs.fluffos.info/fengyun434/llms.txt