File Formats
| File Format | Known Extensions | Magic Bytes | Description | Compatible Tools |
|---|---|---|---|---|
| ELF | .elf / .rpx | 7F 45 4C 46 | The entire game's code, compiled to be ran by the Wii U | Ghidra / IDA Pro / CEMU |
| SARC | .sarc / .bfma | 53 41 52 43 | Archive Format | Switch Toolbox |
| FRES | .bfres | 46 52 45 53 | Binary Wii U Model Format | Switch Toolbox |
| YAZ0 | .szs / .yaz / .yaz0 | 59 61 7A 30 | Compression Format | Switch Toolbox |
| FLAN | .bflan | 46 4C 41 4E | Binary Wii U Layout Animation Format | Switch Toolbox |
| FLYT | .bflyt | 46 4C 59 54 | Binary Wii U Layout Format | Switch Toolbox |
| BFLIM | .bflim | - | Binary Wii U Layout Image Format | Switch Toolbox |
| GFX2 | .gtx / .gsh | 47 66 78 32 | Image/Shader Format (?) | - |
| RPRH | .dat | 52 50 52 48 | Replay or Save Data | - |
| FFNT | .bffnt | 46 46 4E 54 | Binary Wii U Font Format | Switch Toolbox |
| MsgStdBn | .msbt | 4D 73 67 53 74 64 42 6E | Text Archive Format | MSBT Editor / Kuriimu1 |
| MsgPrjBn | .msbp | 4D 73 67 50 72 6A 42 6E | Text Data Format (?) | - |
| FWAV | .bfwav | 46 57 41 56 | Binary Wii U Wave Audio Format | Citric Composer |
| FSAR | .bfsar | 46 53 41 52 | Binary Wii U Sound Archive Format | Citric Composer |
| EXBIN | .exbin | 00 00 0B B8 00 00 03 E8 | (?) | - |
| PARAM | .param | - | (?) | - |
| SPBD | .ptcl | 53 50 42 44 | Particle Data Format | Switch Toolbox |
| BAHS | .sharcfb | 42 41 48 53 | (?) | - |
| ENVSET | .envset | 30 2F 2F 3C | Plaintext Format | - |
| OPT | .opt | - | (?) | - |
| AAHS | .sharc | 41 41 48 53 | (?) | - |
| AAMP | .bagldof / .baglenv / .bagllmap | 41 41 4D 50 | (?) | - |
| CAMERA | .camera | - | (?) | - |
| BTSND | .btsnd | - | Boot Sound (?) | - |
| ARC | .arc | 78 9C | Archive Format | Switch Toolbox |
| [[1]] | .h264 | - | Advanced video compression format used for the Wii U app boot video. Not used on CEMU. | [Media Player] |
| [[2]] | .xml | (EF BB BF) 3C 3F 78 6D 6C | Markup Text Format for game metadata | Any text editor of your choice |
| BIN | .bin | - | Multiple Generic/Unknown Binary Data Formats | - |