---
license: odc-by
pretty_name: Maimai Charts Dataset
size_categories:
  - 1K<n<10K
tags:
  - art
  - music
---

# Maimai Charts Dataset

Dataset of [Maimai](https://en.wikipedia.org/wiki/Maimai) charts & music, in [3simai](https://w.atwiki.jp/simai/pages/1003.html) format.

## Disclaimer

This dataset is licensed under the [Open Data Commons Attribution License](https://opendatacommons.org/licenses/by/1-0/), provided for research and educational purposes only. It is not affiliated with, endorsed, or sponsored by SEGA or any of its subsidiaries. All copyrights and trademarks relating to Maimai and its charts are the property of their respective owners. The creators of this dataset do not claim any ownership of the original content.

## Contributing

`main.py` is the maintainance script, just `python main.py --help` to see the options.

Before generating the dataset, you need to download & decompress [Maichart-Converts](https://github.com/Neskol/Maichart-Converts):

```
/maichart/
- maimai
- maimai DX
- ...
- Kop6thUpdate
```

NoBGA version is OK, but you need to merge the update package (`Kop6thUpdate`) into the versioned directories:

In detail, extract `&genre=foo` from `maidata.txt` and move (overwrite) to corresponding directories.