# sead: reconstructing Nintendo EAD engine libraries used by NSMBU

> sead reconstructs Nintendo EAD engine and library code found in New Super Mario Bros. U and other games. Its C++ tree covers framework, containers, graphics, audio and file devices, with a current goal of matching the original functionality rather than its compiled bytes.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-09
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/nsmbu/sead>
- Primary source: <https://github.com/nsmbu/sead/blob/9d69563298cb82ea1fce9526e962e0d2ea3ba4dc/README.md>
- Catalog page: <https://awesomerea.org/resources/nsmbu-sead-case/>
- Record JSON: <https://awesomerea.org/resources/nsmbu-sead-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/nsmbu-sead-case/index.md)

## Requirements & limits

- **Limits:** Byte-identical matching is outside the current goal because the compiler version used for NSMBU is unavailable.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/nsmbu/sead/blob/9d69563298cb82ea1fce9526e962e0d2ea3ba4dc/README.md>
2. <https://github.com/nsmbu/sead/blob/9d69563298cb82ea1fce9526e962e0d2ea3ba4dc/packages/agl/README.md>

## More in Games

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- [shadowheartsdecompilation: Shadow Hearts PS2 runtime classes decompiled to C++](https://awesomerea.org/resources/shadow-hearts-decompilation-case/index.md) · Case study
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- [skcollectioncport: Sonic & Knuckles Collection rebuilt in C](https://awesomerea.org/resources/skcollectioncport-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.