# UltraStar-Deluxe/USDX

The free and open source karaoke singing game UltraStar Deluxe, inspired by Sony SingStar™

Repository: https://github.com/UltraStar-Deluxe/USDX
Canonical: https://ross.abutalabs.com/products/usdx
Homepage: https://usdx.eu
Language: Pascal
License: GPL-2.0
License Family: copyleft
Topics: ultrastar, game, karaoke, singing
Last push: 2026-09-02T14:42:51+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 98, longevity 100
- inputs: {"age_days": 3946, "days_push": 0, "days_rel": 14, "gap_med": 28, "n_releases_24m": 20}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1260, forks 204 (observed 2026-09-03T02:15:08.448200+00:00)

## What it is
UltraStar Deluxe is a free and open source karaoke singing game for PC, inspired by Sony's SingStar, where up to six (or twelve in party mode) players sing along with music using microphones and are scored on pitch and rhythm. It supports custom user-created songs, themes, Lua plugins, and runs on Windows, Linux, and macOS.

## Use cases
- host a karaoke party at home with multiple players and microphones
- play a free SingStar-style singing game on PC
- sing my own song collection instead of buying song DVDs
- score players on singing pitch and rhythm
- create and add custom karaoke songs
- customize the game with themes and Lua plugins
- run a karaoke game on Linux or macOS

## When to choose
- you want a free, open-source SingStar alternative on desktop
- you want to use your own DRM-free audio files and community songs (10,000+ available)
- you need multi-player party mode with microphone pitch scoring
- you want a game that works across Windows, Linux, and macOS, including SingStar microphones

## When to avoid
- you need a mobile or console karaoke app
- you want an online streaming karaoke service with licensed catalogs
- you are unwilling to configure song directories and settings via config.ini
- you need professional vocal-training software rather than a party game

## Facets
- artifact type: application
- maturity: active
- function: game, audio-processing, speech-recognition, gui, plugin-system, theme
- domain: gaming-tools, entertainment, cross-platform, media
- platform: windows, cross-platform
- tags: karaoke, singing-game, singstar-clone, microphone-pitch-scoring, party-mode, pascal, open-source-game, custom-songs, linux, macos, desktop

## Member repositories
- UltraStar-Deluxe/USDX (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:08.448200+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T05:07:37.783612+00:00, confidence not recorded.
  - readme: https://github.com/UltraStar-Deluxe/USDX (fetched 2026-09-03T02:15:08.448200+00:00, sha e506e9689302)
  - homepage: https://usdx.eu (fetched 2026-08-29T12:18:24.607663+00:00, sha 25a18e1225d1)
  - site_page: https://usdx.eu/docs (fetched 2026-08-29T12:18:24.610144+00:00, sha 63058b70a495)
  - site_page: https://usdx.eu/about (fetched 2026-08-29T12:18:24.611841+00:00, sha e9d191b53c68)
- Data as of 2026-08-30T08:39:29.467469+00:00.