# River Raid: an annotated ZX Spectrum disassembly

> River Raid is reverse-engineered from its ZX Spectrum 48K tape image into an annotated SkoolKit disassembly. Pasmo assembles the generated source for comparison with a game snapshot, and the repository records gameplay-loop and data-structure findings. The author reports a byte-identical build while routine documentation is still in progress.

- 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/river-raid/river-raid-disasm>
- Primary source: <https://github.com/river-raid/river-raid-disasm/blob/997a0853b1d91cf818718c19fbcbcf7d2aa56e85/README.md>
- Catalog page: <https://awesomerea.org/resources/river-raid-zx-disassembly-case/>
- Record JSON: <https://awesomerea.org/resources/river-raid-zx-disassembly-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/river-raid-zx-disassembly-case/index.md)

## Requirements & limits

- **Prerequisites:** The original game tape image, SkoolKit 8.4 or newer, and Pasmo are required.
- **Limits:** The project plan reports descriptions for 37 of 229 routines at its stated checkpoint.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/river-raid/river-raid-disasm/blob/997a0853b1d91cf818718c19fbcbcf7d2aa56e85/README.md>
2. <https://github.com/river-raid/river-raid-disasm/blob/997a0853b1d91cf818718c19fbcbcf7d2aa56e85/PLAN.md>

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## 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.