Blindtest.gg is a free online multiplayer music quiz that lets players test their musical knowledge and compete in real time. In each standard game, players identify the title and artist of 15 music excerpts, each lasting 25 seconds, as quickly as possible. Available categories include rock, rap, pop and French variété, with public games and private rooms for playing with friends.

Players can create a private game and invite others using a simple link. With an account, they can also add their own playlists from Spotify or Deezer and track their statistics and progress through levels. The site offers themed playlists for decades such as the 1980s and 1990s, as well as music from films, television series and Disney. In these themed private games, players guess the work a track comes from rather than its title and artist. Account holders can earn trophies, collect avatars and climb the leaderboards. Blindtest.gg is accessible without registration for standard play, while creating an account unlocks additional personalization and progression features.