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FAQ

Everything you need to know about Guess When Music.

The basics

A multiplayer party game where everyone listens to the same song and tries to guess the year it was released. The player who’s furthest off loses a life. Last one standing wins.

No. It runs in your phone’s browser. Open the link, enter the room code, you’re in.

No. Free, no ads, no account required.

Minimum 2, but it’s genuinely more fun with 4 or more. The bigger the spread of guesses on the reveal, the better.

Joining & setup

One person creates a room at guesswhen.app. They share the 4-digit code with everyone else. Everyone visits guesswhen.app, enters the code, picks a name, and joins.

Yes. The host can approve late joiners mid-game and assign them starting lives.

The game won’t let that happen — it’ll tell you the name is taken before you join.

Yes, within a short window. If you go back to guesswhen.app you’ll be prompted to rejoin your active game.

How the game works

Everyone guesses the release year of the song. After the reveal, the player with the biggest difference from the correct year loses a life. Everyone else keeps theirs.

Both lose a life.

You’re eliminated. You can still watch the rest of the game, but you’re out of the running.

Guessing the exact release year. If you nail it, you gain a life (up to the maximum). This is rarer than people expect.

The player with the smallest difference on that final song wins.

Yes. The host is a regular player — they just also get controls like starting the game, skipping a broken song, and approving late joiners.

Music

By default, Guess When Music plays 30-second previews via Deezer. No Deezer account needed — it just works.

Yes, if you have Spotify Premium. The host can connect their Spotify account in the game settings before starting. This plays the full song (up to 60 seconds) with better audio quality.

The library spans the 1950s to the 2020s, covering pop, rock, hip-hop, R&B, and more. It’s deliberately mixed — you’ll get decades you’re confident in and decades that wreck you.

Yes. Contact us with the artist, title, and release year.

Settings & configuration

Before starting, the host can set the number of starting lives (1, 2, or 3) and the length of the guessing countdown (15, 30, 45, or 60 seconds). They can also switch between Deezer previews and Spotify.

No. Settings are locked when the game starts.

It scales with the number of players, so shorter groups get a tighter game. A typical game runs around 10–15 songs.

Technical

Any modern mobile browser — Chrome, Safari, Firefox. It works on desktop too, but it’s designed for phones.

Mobile browsers block audio until the user has interacted with the page. Make sure you’ve tapped something before the song starts. If a song fails to load entirely, the host can skip it.

The game supports up to 20 players in a room.

One person, as a hobby project, in Gothenburg, Sweden. More on the contact page.