# Ar tonelico II: matching decompilation of the Japanese PS2 release

> Ar tonelico II decomp reconstructs C source for the Japanese PS2 release SLPS_258.19 and checks compiled functions against the retail binary byte by byte. The author reports 4,800 of 10,923 functions matched as of 2026-10-27; the build uses the original EE compiler toolchain.

- 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/USED255/artonelico2-decomp>
- Primary source: <https://github.com/USED255/artonelico2-decomp/blob/16256209a6b2ab293d31fc5c6e03096a6c2151f6/README.md>
- Catalog page: <https://awesomerea.org/resources/ar-tonelico-ii-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/ar-tonelico-ii-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/ar-tonelico-ii-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** Requires the user's own SLPS_258.19 executable from the game disc.
- **Prerequisites:** Requires the original EE compiler toolchain, plus splat and objdiff-cli.
- **Limits:** The author reports 4,800 of 10,923 functions matched as of 2026-10-27.
- **License:** GPL-3.0 license.

## Primary sources

1. <https://github.com/USED255/artonelico2-decomp/blob/16256209a6b2ab293d31fc5c6e03096a6c2151f6/README.md>
2. <https://github.com/USED255/artonelico2-decomp/blob/16256209a6b2ab293d31fc5c6e03096a6c2151f6/README.zh-CN.md>

## More in Games

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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.