Botw Wux File -
| Format | Full Name | Compression | Typical Size (BOTW) |
|--------|-----------|-------------|---------------------|
| .wud | Wii U Disc Image | None | ~23–25 GB |
| .wux | Wii U Compressed Image | Lossless (LZMA/LZ4) | ~9–11 GB |
| .wua | Wii U Archive (newer) | Solid compression | ~9 GB |
BOTW originally shipped on a Wii U disc (~25 GB). The .wux format was developed by the emulation community (specifically for Cemu) to reduce storage and bandwidth needs. botw wux file
Once converted, you can delete the original 25GB WUD file. | Format | Full Name | Compression |
The .wux file format is a compressed, read-only disk image format derived from the raw (wud) dumps of Nintendo Wii U optical discs. In the context of The Legend of Zelda: Breath of the Wild (BOTW), .wux files serve as a highly efficient storage method for the game’s complete dataset, reducing file size by approximately 20-40% compared to raw dumps while maintaining full compatibility with emulators such as Cemu. botw wux file