Source: https://seerepo.com/r/ppy/osu
Markdown source: https://seerepo.com/r/ppy/osu.md
Description: ppy/osu is a C# repo with 600,812 lines written. osu uses SQLite.

# What's inside ppy/osu

ppy/osu is a C# repo with 600,812 lines written. osu uses SQLite.

Its description on GitHub: “rhythm is just a *click* away!”

C# · MIT · 19,375 stars · GitHub: https://github.com/ppy/osu

Read on November 6, 2026, at commit 8b7b8da.

## More on this repo

- [What is osu built with?](https://seerepo.com/r/ppy/osu/built): osu uses SQLite.
- [How much of osu did AI write?](https://seerepo.com/r/ppy/osu/ai): No AI tool signed any of the 55,092 commits of osu.

## In figures

- 600,812 lines written: The ones people and agents wrote: product, tests, schemas and tooling. Generated code doesn’t count.
- 954 files: The same as the lines: product, tests, schemas and tooling. What’s generated doesn’t count.
- 3,911 test files: The files that test the code.
- 4 technologies: Each service with the file and line that prove it.

SeeRepo read the facts in its code and kept none of it. AI only helps sort its packages and folders by their names, and never sees its code.

## Frequently asked questions

### What is ppy/osu?

ppy/osu is a C# repo with 600,812 lines written. Its description on GitHub: “rhythm is just a *click* away!”

The proof: [its page on GitHub](https://github.com/ppy/osu)

### What is osu built with?

osu uses SQLite.

The proof: [each service with its file and line](https://seerepo.com/r/ppy/osu/built)

### What license does osu have?

osu is released under the MIT license.

The proof: [its page on GitHub](https://github.com/ppy/osu)

### How many stars does osu have on GitHub?

osu had 19,375 stars on GitHub on November 6, 2026.

The proof: [its page on GitHub](https://github.com/ppy/osu)

## Add this badge to your README

It links to this page and updates itself each time SeeRepo reads the repo.

```markdown
[![ppy/osu on SeeRepo](https://seerepo.com/badge/ppy/osu.svg)](https://seerepo.com/r/ppy/osu?de=insignia)
```

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.