GameIndie

McOsu

79KS
Released Mar 20, 2017by McKayVery Positive(89% of 6.4K Steam reviews)Recent: 88% positive

A free open-source circle-clicking rhythm game practice client for osu! beatmaps with Virtual Reality support. McOsu is developed separately from and has no direct affiliation with osu! or ppy Pty Ltd.

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About McOsu

McOsu is developed separately from and has no direct affiliation with osu! or ppy Pty Ltd.

McOsu is NOT osu!

A free open-source circle-clicking rhythm game client for osu!(standard) beatmaps, with the main focus on making practicing easier and customizing gameplay.

It is primarily a practice client for getting better at the "official" game by having tools at your disposal that osu!(stable) does not provide for some reason, it's not supposed to be a perfect copy of osu! though it does get close enough where necessary.

If you have never played osu! before, then I do not recommend using this client (except for VR players + FPoSu players of course), because there are no gameplay tutorials to be found here (just google "osu!" and play the official game which is a lot more polished and has online rankings including multiplayer support etc.).

McOsu only supports osu!(standard) beatmaps, while diffs for other gamemodes like mania/taiko/ctb/etc. are simply invisible.

Features:

  • Unlimited Customizability (Options, Console Commands via SHIFT + F1)

  • Beatmap Overrides (Approach Rate, Circle Size, Overall Difficulty, HP Drain)

  • Speed/BPM Slider

  • Scrubbing and Quicksave/load (SHIFT and F6/F7, rebindable, jump to any point in time of a beatmap)

  • Experimental Mods (Wobble, Jigsaw, First Person, Playfield Flipping, Reverse Sliders, etc.)

  • Change mods and options while playing (F1 and CTRL + O)

  • Built-in pp counter (live stats overlay + ranking screen)

  • VR gamemode

  • First-Person 3D gamemode (FPoSu)

  • Steam Workshop support for skins

  • Infinite offline profiles with pp ranking

  • Customizable HP Drain + Notelock algorithms

Beatmaps

  • If you have osu!(stable) installed, then McOsu will load your beatmaps directly from the default osu!(stable) installation path, although custom paths are also possible

  • You can use McOsu without installing osu!(stable), it is not recommended though. A guide on manual beatmap management is available in the Steam Community Guides

  • Creating an official osu! account for downloading beatmaps is not required. You do not have to use the official osu! website to download beatmaps. Third party beatmap mirrors are available, just google for them 

osu! VS McOsu

The intention of this game is neither to replace peppy's client, nor to split the community. McOsu was created partially out of frustration, because osu! is lacking many usability features vital to practicing effectively and efficiently. This is currently being rectified in the rewrite of osu! (called osu!lazer), which is an open-source project anyone can contribute to as well.

As a wise man once said, "plz enjoy game".

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If you want, you can help out with McOsu development on Github, or just take a look at the source code, as this is an open-source project.

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Skin Credits:

  • ffffffffffffffffff - "- Jaret - Mish Mosh"

  • irrlux - "Talrava XIV"

  • HazrdMC - "Phaze"

  • Redon - "Aesthetic 1.3"

  • DarkSlayer000 - "xXx_SampleSkin_xXx v1.3"

  • Inori - "Stepmania"

  • taikuta - "Murakumo"

  • Easy - "Burning_Crow V2"

  • Icomoon

  • Freepik

Game details

Game details

Released
Developer
Publisher
Platforms
Steam rating
Very Positive (89%)

Age ratings

IGRS 13DEJUS 12STEAM_GERMANY 6

Game modes

Languages

McOsu player count & reviews

96% positive reviews in the last 30 days (89% all-time) · 92 peak players in the last 30 days.

McOsu — frequently asked questions

How many people play McOsu?

McOsu peaked at 92 concurrent players on Steam in the last 30 days (highest on Jul 12, 2026). The player chart on this page updates daily.

How can I get McOsu at a discount?

Create a free price alert on this page and KingsPrice will email you when McOsu drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.

System requirements

Minimum

Minimum:
  • OS *: Windows 7
  • Processor: Not a Potato™
  • Memory: 512 MB RAM
  • Graphics: OpenGL 3.0 compatible
  • Storage: 75 MB available space
  • Sound Card: XAudio2 / DirectSound compatible
  • VR Support: SteamVR. Standing or Room Scale

Recommended

Recommended:
  • OS *: Windows 7 or newer
  • Processor: Intel® Core™ i5 or better
  • Memory: 2 GB RAM
  • Graphics: NVIDIA GeForce® GTX 970 (for VR) / AMD Radeon™ R9 290 or better (for VR)
  • Storage: 75 MB available space
  • Sound Card: XAudio2 / DirectSound compatible

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