Aux Battles is a free, no-login multiplayer music battle game. Friends join a room with a 4-letter code, submit a Spotify, YouTube, or SoundCloud song to a shared prompt, vote blind 0.5–5 stars, and a leaderboard decides the winner.

The 4-letter room code plus no-login setup is exactly the right call for a party game — the second you ask people to make an account before they can vote on songs at a get-together, half the room checks out. The blind voting is what makes it actually work as a game rather than just a shared playlist, since otherwise everyone just votes for whoever's song they recognize. The Twitch integration with chat voting is a smart extra surface too — that's a genuinely different use case (streamer + audience) from the friend-group version, not just a bolted-on feature.

The 4-letter room code plus no-login setup is exactly the right call for a party game — the second you ask people to make an account before they can vote on songs at a get-together, half the room checks out. The blind voting is what makes it actually work as a game rather than just a shared playlist, since otherwise everyone just votes for whoever's song they recognize. The Twitch integration with chat voting is a smart extra surface too — that's a genuinely different use case (streamer + audience) from the friend-group version, not just a bolted-on feature.
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