# Conker's Bad Fur Day: function-matched N64 decompilation

> 64CBFD reconstructs code and data for the Nintendo 64 game Conker's Bad Fur Day from a user-provided US ROM. Its build extracts game sections, rebuilds C functions and compares linked instructions with the retail image; the author reports separate converted and byte-exact function counts.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/gipson-dev/64CBFD>
- Primary source: <https://github.com/gipson-dev/64CBFD/blob/ee87641e4cbc85df8c4d05c2dc38393d6ea5c1c3/README.md>
- Catalog page: <https://awesomerea.org/resources/64cbfd-conker-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/64cbfd-conker-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/64cbfd-conker-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** A legally obtained big-endian US ROM is required as baserom.us.z64.
- **Prerequisites:** Docker, native Linux or WSL is supported for the matching IDO toolchain.
- **Limits:** The author reports 4,196 of 5,512 converted functions byte-exact in the stated snapshot.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/gipson-dev/64CBFD/blob/ee87641e4cbc85df8c4d05c2dc38393d6ea5c1c3/README.md>
2. <https://github.com/gipson-dev/64CBFD/blob/ee87641e4cbc85df8c4d05c2dc38393d6ea5c1c3/DOCS/REVERSE_ENGINEERING_SETUP.md>

## More in Games

- [Conker's Bad Fur Day: matching Nintendo 64 decompilation](https://awesomerea.org/resources/conkers-bfd-decomp/index.md) · Case study
- [Contra (J) disasm: rebuilding the Japanese NES game](https://awesomerea.org/resources/contra-j-disasm-case/index.md) · Case study
- [Cosmore: reconstructing Cosmo's Cosmic Adventure](https://awesomerea.org/resources/cosmore-case/index.md) · Case study
- [Crackdown 2: byte-matched Xbox 360 decompilation](https://awesomerea.org/resources/crackdown-2-decomp-case/index.md) · Case study
- [Crash Bandicoot: a matching PlayStation decompilation](https://awesomerea.org/resources/crash-bandicoot-matching-decomp-case/index.md) · Case study
- [Crash Bandicoot: The Wrath of Cortex — matching PS2 decompilation](https://awesomerea.org/resources/crash-woc-decomp/index.md) · Case study

## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.