UltraStar Deluxe (USDX) is a free and open source karaoke singing game inspired by Sony SingStar. Up to six players sing along with music through microphones, scoring points based on the pitch of the voice and the rhythm of singing. It is a fork of the original UltraStar by corvus5, adding party mode, theme support and support for more audio and video formats — the improved stability and code quality of USDX enabled ports to Linux and macOS.

Key Features

• Up to six players — sing solo, as a duet or as a full party with multiple microphones
• Pitch & rhythm scoring — points awarded for how accurately you hit and hold the notes
• Party mode — queue players, songs and playlists for a karaoke night
• Jukebox mode — play tracks without scoring, like a normal music player
• Fixed-order playlists — structured song lists for themed sessions
• Theme support — restyle the game’s look with community themes
• Custom song library — add your own songs as a folder of audio plus a note file; large community song collections exist
• Multi-screen play — two or three players can each sing on their own display
• Gamepad support — optional joypad controls alongside the keyboard
• ProjectM visualisations — music-reactive visuals (macOS)

Why Use UltraStar Deluxe?

It is the most established open source karaoke game: decades of development, an actively maintained upstream with regular releases, and a huge library of community-made songs. Unlike proprietary karaoke apps there are no subscriptions or per-song purchases — you build and own your song collection, and the scoring engine gives real pitch feedback rather than guessing.

Use Cases

• Karaoke nights at home with family and friends
• Parties and events — party mode queues everyone in turn
• Singing practice with live pitch feedback
• Building a custom song library from community song packs

Platforms

Linux (AppImage · Flatpak · AUR) · macOS (Intel & Apple silicon) · Windows (installer or portable)

Licence

GPL-2.0 — free and open source software.

Website

usdx.eu · Source on GitHub

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