The best free alternative to osu! is StepMania, which is also Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to osu! and 19 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to osu! are Quaver, Clone Hero, Friday Night Funkin' and Frets on Fire.
Rhythm game for Windows, Mac, and Linux. It features 3D graphics, keyboard and dance pad support, and an editor for creating your own steps.
is is based on DDR if you know that rhythm game, so it is a very good alternative
Quaver is a community-driven and open-source competitive rhythm game with two game modes and online leaderboards. Create your own maps or challenge the world in online multiplayer matches.
Clone Hero is a free rhythm game, which can be played with any 5 or 6 button guitar controller, Game Controllers, or just your standard computer keyboard. Download the game, copy your song charts into the song folder and enjoy hours of fun!.
Friday Night Funkin’ is a musical rhythm game where you compete in freestyle music battles.
Frets on Fire is a game of musical skill and fast fingers. The aim of the game is to play guitar with the keyboard as accurately as possible.
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.
It's clone osu! on custom engine.
Malody is a cross-platform music game (Simulator) which is developed by a group of dedicated volunteers.
Tap Tap Reloaded is the ultimate community-driven rhythm game experience. Reloaded is built on what the community wants in a mobile rhythm game. Tap Tap Reloaded is powered by a highly qualified and experienced team of the best Tap Tap players in the world.
Flash Flash Revolution (or FFR) is a music-based rhythm game that runs through Adobe Flash and an Internet browser, making it a full-fledged online music title that requires no downloads or fees to play.
Web!Mania is a version of the "osu!mania" game mode of "osu!" developed to be played in web browsers, without the need to download anything.
A new motion-based game to experience your favorite artists and music in an unrivaled multi-sensory way.
DittoBeat is a music game that lets you test your skills and become the ultimate rhythmic copycat. Watch to learn the multicolored patterns and then repeat back the same rhythm pattern as accurately as you can to the music.
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StepMania is also a good music game that can be adictive, and is for desktops, unlike most music games.