# F-Zero X: an early US N64 decompilation

> F-Zero X reconstructs parts of the US Nintendo 64 game in C, alongside assembly extracted from the user's ROM. Its build extracts a user-supplied Z64 ROM and produces a ROM with a published SHA-1 target. The author describes the codebase as early research and says its output is not yet suitable as a general modification base.

- 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/BttrDrgn/f-zerox>
- Primary source: <https://github.com/BttrDrgn/f-zerox/blob/3880655cb759f69e64802c9104ae345c6424232c/README.md>
- Catalog page: <https://awesomerea.org/resources/bttrdrgn-f-zero-x-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/bttrdrgn-f-zero-x-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/bttrdrgn-f-zero-x-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** Provide a legally obtained USA F-Zero X ROM in Z64 format as baserom.us.z64.
- **Prerequisites:** Requires Python 3.10 or newer and a MIPS64 toolchain.
- **Limits:** The reconstructed ROM is not yet shiftable or suitable for general source modifications.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/BttrDrgn/f-zerox/blob/3880655cb759f69e64802c9104ae345c6424232c/README.md>

## More in Games

- [f19re: a matching F-19 Stealth Fighter reconstruction](https://awesomerea.org/resources/f19re-case/index.md) · Case study
- [Fable: The Lost Chapters: function-level reconstruction of the PC executable](https://awesomerea.org/resources/fable-the-lost-chapters-decomp-case/index.md) · Case study
- [Fallout: New Vegas: a work-in-progress decompilation](https://awesomerea.org/resources/fallout-new-vegas-decomp-case/index.md) · Case study
- [Fate/Unlimited Codes: a matching Japanese PS2 decompilation](https://awesomerea.org/resources/fate-unlimited-codes-jp-decomp-case/index.md) · Case study
- [FE7 EU decomp: matching reconstruction of the European Fire Emblem ROM](https://awesomerea.org/resources/fe7eu-decomp-case/index.md) · Case study
- [Final Fantasy Crystal Chronicles: GameCube decompilation](https://awesomerea.org/resources/ffcc-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.