Aux Battles — Free Multiplayer Music Battle Game

Aux Battles is a free multiplayer music battle game powered by Spotify, YouTube and SoundCloud — also known as aux wars or the aux game. Players pick a random topic, submit their best matching song, and vote on each other's picks 1–5 stars. The highest-rated song wins the round.

Yes. Aux war, aux wars, auxwars, and "the aux game" are all names for the same thing — a song battle with friends where everyone submits a track to a prompt and votes on the best pick. Different friend groups use different names; Aux Battles is all of them.

Only for Spotify rooms — playing full Spotify tracks requires Spotify Premium. YouTube and SoundCloud need no account at all: those tracks play right in the page. If your host enables YouTube or SoundCloud, you can play the whole game without signing up for anything. Players who only want to listen and vote never need an account either way.

Yes, completely free. No accounts, subscriptions, or in-app purchases. Just go to auxbattles.vercel.app and start playing.

No download required. Aux Battles runs entirely in your web browser on desktop and mobile. Spotify tracks open in the Spotify app, so you need that installed — SoundCloud tracks play directly in the browser with nothing to install.

Click "Join Room", enter the 4-letter room code shared by the host, and enter your display name. No account or login required.

No hard limit. It works best with 3–10 players and is ideal for house parties, friend group calls, or group chats.

Yes. It's a free, no-login alternative to Music League and similar song-submission voting games. Friends submit Spotify, YouTube or SoundCloud songs to a prompt and vote on each other's picks — but there are no accounts, and rounds play out live in minutes instead of over days.

Yes. Voting is blind — when you rate a song you can't see who submitted it. Names are only revealed once the votes are in, so picks are judged on the music alone.

A Twitch Battle runs Aux Battles live on your stream. Connect your Twitch channel from the homepage and your chat can vote and submit songs right alongside the players already in the room — no viewer app or extension required.

To vote, no — viewers just type a number 0.5–5 in chat and it counts instantly. Submitting a song can work the same way (pasting a link in chat) or, if the host requires it, through a submit link viewers log into with their Twitch account.

Click "Host a Twitch Battle" on the homepage and connect your Twitch channel — that spins up a room instantly, ready for your chat to join in. You can configure how viewers submit and vote, how many songs make it into a round, and give channel mods mod-view access.