# sead: decompilation of Nintendo EAD libraries

> sead is a decompilation of the engine and libraries developed by Nintendo EAD, now EPD, as found in New Super Mario Bros. U and other games. The README describes engine/ as the standard library, nw_ptcl as a wrapper around NintendoWareForCafe Eft, and agl as the graphics library. It says a byte-identical rebuild is out of reach without the NSMBU compiler, and the current goal is matching functionality and efficiency.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-07
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/aboood40091/sead>
- Primary source: <https://github.com/aboood40091/sead/blob/4b48682902e5c3d84f83db39bcf33a635b9c0757/README.md>
- Catalog page: <https://awesomerea.org/resources/sead/>
- Record JSON: <https://awesomerea.org/resources/sead/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/sead/index.md)

## Requirements & limits

- **Limits:** The README sets the goal as functional parity with the original libraries. It says a 1:1 decompilation of the NSMBU sead classes is impossible without the compiler version used for that game.
- **License:** GitHub's license metadata for this repository is empty.

## Primary sources

1. <https://github.com/aboood40091/sead/blob/4b48682902e5c3d84f83db39bcf33a635b9c0757/README.md>

## More in Games

- [sead: reconstructing Nintendo EAD engine libraries used by NSMBU](https://awesomerea.org/resources/nsmbu-sead-case/index.md) · Case study
- [SegaSonic The Hedgehog: arcade code reconstructed in C](https://awesomerea.org/resources/segasonic-hedgehog-decomp-case/index.md) · Case study
- [Severed Chains: rewriting The Legend of Dragoon in Java](https://awesomerea.org/resources/severed-chains/index.md) · Case study
- [Shadowgate 64: an N64 disassembly and source reconstruction](https://awesomerea.org/resources/shadowgate-64-case/index.md) · Case study
- [shadowheartsdecompilation: Shadow Hearts PS2 runtime classes decompiled to C++](https://awesomerea.org/resources/shadow-hearts-decompilation-case/index.md) · Case study
- [Sheep, Dog 'n' Wolf: a decompiled multiplatform implementation](https://awesomerea.org/resources/sheep-dog-n-wolf-rewooled-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.