Aux Battles is a free multiplayer music battle game powered by Spotify. 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.

Do I need a Spotify account to play Aux Battles?

Spotify Premium is required to submit and play songs during battles. However, players who only want to listen and vote can join without a Spotify account.

Yes, Aux Battles is completely free. There are no accounts, subscriptions, or in-app purchases. Just go to auxbattles.vercel.app and start playing.

Do I need to download an app to play Aux Battles?

No download is required. Aux Battles runs entirely in your web browser on desktop and mobile. You do need the Spotify app installed to play music during battles.

How do I join an Aux Battles game?

Go to auxbattles.vercel.app, click 'Join Room', enter the 4-letter room code shared by the host, and enter your display name. No account or login required.

How many players can play Aux Battles?

Aux Battles supports multiple players in real-time with no hard limit. It works best with 3–10 players and is ideal for house parties, friend group calls, or group chats.

Aux Battles — Multiplayer Music Battle Game with Spotify

Free Multiplayer Music Battle Game · Powered by Spotify

Create Room

Join Room

How It Works

How to Play

Create or join a room with friends.

A random music topic is picked for the round.

Submit a Spotify song that perfectly fits the vibe.

Everyone listens to the tracks and votes 1–5 stars.

The highest-rated song wins the round!

⚠️ You need Spotify Premium and the Spotify app installed to play songs during battles.

Got feedback or ideas?

Suggest Features / Leave Opinion

Why I Built This

Me and my friends have been playing aux battles for years. Someone would pick a theme, everyone thinks of prompts, we write them on a notepad, then pick from them randomly, and then the battles start. We did it manually for a long time, but there was a problem. We argued over ratings, and nobody could ever agree on who actually won.

When I looked for an app where we could play. Every one I found wanted an account, a login, or a paywall — for a game you want to start in 10 seconds at a party. Diabolical.

So I just built it myself. No accounts. Nothing to download. Paste a 4-letter code in the group chat and everyone's in. The chaos is still there, the setup isn't.

Fun fact

The whole thing was built in about a week. Sleep was optional :).

Fun fact

Spotify embeds play at 100% volume by default and there's no way to change it.

Aux Battles — Free Multiplayer Music Battle Game

How to Play

Why I Built This

Aux Battles FAQ