# Thexder: NES level and disassembly analysis

> Thexder examines the NES/Famicom game through an IDA analysis file and a PHP level renderer. The renderer reads tile values and object records at fixed offsets in the game ROM and outputs a level image.

- 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/Xkeeper0/thexder>
- Primary source: <https://github.com/Xkeeper0/thexder/blob/3cf6fd012efd31c9f0737c3babe3ea812f5d28db/files/thexder.php>
- Catalog page: <https://awesomerea.org/resources/thexder-nes-analysis-case/>
- Record JSON: <https://awesomerea.org/resources/thexder-nes-analysis-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/thexder-nes-analysis-case/index.md)

## Requirements & limits

- **Prerequisites:** A thexder.nes ROM file is required for the level renderer.
- **Prerequisites:** PHP with image functions is required for the renderer.
- **License:** MIT licence.

## Primary sources

1. <https://github.com/Xkeeper0/thexder/blob/3cf6fd012efd31c9f0737c3babe3ea812f5d28db/files/thexder.php>
2. <https://github.com/Xkeeper0/thexder/blob/3cf6fd012efd31c9f0737c3babe3ea812f5d28db/README.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.