osu!

Although this product has been released, it remains under active development - information may change frequently and could be outdated or irrelevant.

osu!

Developers
	Dean "peppy" Herbert
Engines
opsu!	LWJGL
Release dates
Windows	September 16, 2007
macOS (OS X)	October 17, 2015
Linux	Early access
Taxonomy
Monetization	Free-to-play, Subscription
Genres	Music/rhythm

Warnings

The macOS (OS X) version of this game needs a fix to work on macOS Catalina (version 10.15) or later (see API for details).

Key points

Vast majority of features are completely free.

Runs well on low-end hardware and features many options dedicated to increase frame rate.

Constantly updated and community provides new content.

General information

Official wiki

Official forums

Availability

Source	DRM	Notes	Keys	OS
Official website		osu!stable – original official client which allows submitting scores to the osu! servers. 32-bit only.
Developer website		osu!lazer – open source cross-platform rewrite of the osu! client, has many more features including native Linux support, but is still in development. 64-bit only.
Developer website		opsu! – unofficial open-source client for the rhythm game osu!, written in Java using Slick2D and LWJGL.

Online features require an osu! account.

Game data

General settings.

Configuration file location

System	Location
Windows	<path-to-game>\osu!.<user-id>.cfg
macOS (OS X)

Save game data location

System	Location
Windows	<path-to-game>\scores.db
macOS (OS X)

osu! account stores high scores and ghost data.

Video

Graphics settings.

Graphics feature	State	Notes
Widescreen resolution
Multi-monitor
Ultra-widescreen		Many custom skins will not work properly at ratios higher than 16:9.
4K Ultra HD
Field of view (FOV)
Windowed
Borderless fullscreen windowed
Anisotropic filtering (AF)
Anti-aliasing (AA)		Softening filter adds blur.
High-fidelity upscaling		See the glossary page for potential workarounds.
Vertical sync (Vsync)
60 FPS and 120+ FPS		VSync, Power Saving (2x refresh rate), Optimal (multiple of refresh rate) and Unlimited (1000 FPS) caps are available for osu!stable. VSync, 2x refresh rate, 4x refresh rate, 8x refresh rate and "Basically Unlimited" (1000 FPS) caps are avaliable for osu!lazer.
High dynamic range display (HDR)		See the glossary page for potential alternatives.
Ray tracing (RT)

Input

Input settings.

Keyboard and mouse, touch	State	Notes
Remapping
Mouse acceleration
Mouse sensitivity		0.4x to 6x multiplier in osu!stable, 0.1x to 10x in osu!lazer.
Mouse input in menus
Mouse Y-axis inversion
Touchscreen optimised
Controller
Controller support		Only for non-osu!standard playmodes. Requires button binding.
Full controller support
Controller remapping
Controller sensitivity
Controller Y-axis inversion

Controller types

XInput-compatible controllers
Xbox button prompts
Impulse Trigger vibration

Generic/other controllers		Supports Nintendo Wii Taiko Drum controller, tablets, arcade controllers and many more.
Button prompts

Additional information
Controller hotplugging
Haptic feedback
Digital movement supported
Simultaneous controller+KB/M

Audio

Audio settings.

Audio feature	State	Notes
Separate volume controls		Master, music and effects. Ability to mute hitsounds.
Surround sound		Editing a beatmap to use a 5.1 .wav file disguised as an .mp3 file, will cause the beatmap to crash, whereas using stereo files would work.
Subtitles		Depends on played beatmap. Some user-created beatmaps may contain a storyboard with subtitles, but most will not.
Closed captions
Mute on focus lost		Only when minimized to tray by pressing Insert in osu!stable. There is a seperate volume slider for focus lost in osu!lazer.
Royalty free audio		Many of the downloadable songs (including songs downloaded at first launch) may trigger auto-DMCA systems.

Includes audio calibration with wizard.

Language settings.

Localizations

Language	UI	Audio	Sub	Notes
English				Interface voice is in English, no captions. Old tutorial was captioned, current is not.
Arabic
Belarusian
Bulgarian
Simplified Chinese
Traditional Chinese
Croatian
Czech
Danish
Esperanto
Dutch
Filipino
Finnish
French
German
Greek
Hebrew
Hungarian
Indonesian
Italian
Japanese
Korean
Latvian
Malay
Mongolian
Norwegian
Polish
Portuguese
Romanian
Russian
Slovak
Slovenian
Spanish
Swedish
Thai
Turkish
Ukrainian
Vietnamese

An up-to date page of all supported languages can be found here.

Audio and subtitling depends on played beatmap.

Network

Online settings.

Online features require an osu! account.

Features osu! Chat which uses IRC protocol Automatically joins channel #osu when game is opened.

Uses a custom anti-cheat system.

Multiplayer types

Type	Native	Players	Notes
Local play		2	Co-op osu!mania only
LAN play
Online play		16	Co-op, Versus Four modes: head-to-head, team vs, tag co-op (unranked and limited to osu!std), tag-team vs (unranked and limited to osu!std)
Asynchronous multiplayer		Highscores, ghosts

Connection types

Type	Native	Notes
Matchmaking
Peer-to-peer
Dedicated
Self-hosting
Direct IP

Ports

Protocol	Port(s) and/or port range(s)
TCP	13381, 13382

This game does not support Universal Plug and Play (UPnP) for automatic port configuration.

Other information

API

Technical specs	Supported	Notes
Direct3D	9	Compatibility Mode needs to be enabled to use DirectX.
OpenGL	2.1	Used by default.
Shader Model support	2.0

Executable	32-bit	64-bit	ARM	Notes
Windows				Official 64-bit support requires osu!lazer.
macOS (OS X)				Official 64-bit and ARM support requires osu!lazer.
Linux				Official support requires osu!lazer.

System requirements

Windows

macOS (OS X)

Linux

Windows
	Minimum
Operating system (OS)	XP
Processor (CPU)	1 GHz
System memory (RAM)	512 MB
Hard disk drive (HDD)
Other	Microsoft .NET Framework 3.5

Total size after installation at July 27, 2014 was 89 MB.

macOS (OS X)
	Minimum
Operating system (OS)
Processor (CPU)
System memory (RAM)
Hard disk drive (HDD)