# Boss Rally / Top Gear Rally: matching decompilations and native ports

> Boss Rally / Top Gear Rally reconstructs the PC and N64 games as C source checked against their original machine code. The author reports that all 572 functions of the N64 release match byte for byte, while the Boss Rally PC work remains partly matched. Rally Builder creates native builds from users’ BIN/CUE or ROM copies.

- 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/jeff-strutb/brally>
- Primary source: <https://github.com/jeff-strutb/brally/blob/99fbc4d4f734456e2e21ce8ac3c812943025ed9a/README.md>
- Catalog page: <https://awesomerea.org/resources/boss-rally-top-gear-rally-case/>
- Record JSON: <https://awesomerea.org/resources/boss-rally-top-gear-rally-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/boss-rally-top-gear-rally-case/index.md)

## Requirements & limits

- **Prerequisites:** A user-owned Boss Rally BIN/CUE or Top Gear Rally ROM is required for a native build.
- **Limits:** The author reports that Boss Rally’s byte-exact matching remains incomplete.
- **License:** The project’s own tools and port code are under CC0-1.0; its reconstructed game code is outside that dedication.

## Primary sources

1. <https://github.com/jeff-strutb/brally/blob/99fbc4d4f734456e2e21ce8ac3c812943025ed9a/README.md>
2. <https://github.com/jeff-strutb/brally/blob/99fbc4d4f734456e2e21ce8ac3c812943025ed9a/docs/brally/ARCHITECTURE.md>

## More in Games

- [Brave Fencer Musashi decomp port: a hybrid PC runtime with matched C](https://awesomerea.org/resources/brave-fencer-musashi-decomp-port-case/index.md) · Case study
- [Breath of Fire GBA: a European-version decompilation](https://awesomerea.org/resources/breath-of-fire-gba-decomp-case/index.md) · Case study
- [Breath of Fire III decompilation: matching the US PlayStation release](https://awesomerea.org/resources/breath-of-fire-iii-decompilation-case/index.md) · Case study
- [Breath of the Wild: per-function matching decompilation of the Switch executable](https://awesomerea.org/resources/botw-decomp-case/index.md) · Case study
- [Bubsy 3D: a work-in-progress matching decompilation of the USA executable](https://awesomerea.org/resources/bubsy-3d-decomp-case/index.md) · Case study
- [Burnout 2: a matching PlayStation 2 decompilation](https://awesomerea.org/resources/burnout-2-decomp-case/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.