osu!

A free‑to‑play rhythm game that lets players interact with music by clicking, tapping, or dragging in time with beats. The client, released under the codename “lazer,” provides the latest iteration of the osu! experience and runs on macOS 12+, Windows 10+, Linux, iOS, and Android. It is actively maintained, with regular releases and a stable codebase that coexists with the earlier “osu!stable” client.

The software is aimed at rhythm‑game enthusiasts and developers who want to create or experiment with custom gameplay variations. Users can download pre‑built binaries for their platform or build the project from source using the .NET 8.0 SDK and a supported IDE. The open‑source repository includes templates and documentation for building new “rulesets,” allowing developers to leverage the existing beatmap library and engine for novel play styles.

Community resources such as changelogs, project‑management documentation, and discussion forums help contributors stay informed about ongoing improvements and roadmap goals, while the game’s core mechanics remain centered on precise timing and musical interaction.