Yes. There are no ads, no purchases and no account to create: you play in the browser straight away.

Do I need to install anything?

No. Fallegro runs in any recent browser, on a computer or a phone, in portrait or landscape.

Do I need to read music?

No. Each key shows its note name and its place in the phrase, and a timeline under the scene shows when each note should sound. The ear does the rest.

Where does the music come from?

From public-domain works. The melodies come from MIDI files of the Mutopia Project, simplified so a ball can play them; the piano is the Salamander Grand Piano.

How does the leaderboard stay fair?

The game sends your construction, not your score. The server replays it with the same deterministic physics and only ranks the run if the result is identical. Runs played after asking for a hint or the solution are not ranked.

Can I keep my progress on another device?

Yes. Without an account, a one-time code moves your stars and badges to another device. With an email address, a sign-in link restores them anywhere. No password either way.

Fallegro — bounce a ball through the classics, in time

A musical physics game in your browser. Place the notes of a melody so that a ball bounces from one to the next and plays it — Chopin, Beethoven, Mozart — in time. A free browser game that is a physics puzzle and a way into classical music.

Play now — it’s free

How it plays

Listen. Hear the phrase you are about to build: the melody and its accompaniment.
Build. Each note of the melody is a key tuned to its pitch. Drag the keys into the scene and tilt them. Their shape matters: a bouncy key throws the ball back fast, a soft one swallows its speed for a long note.
Launch. The ball falls and every impact plays a note. Hit them in order and on the beat, and the melody comes out of the physics.
Score. Each note is judged on its timing — perfect, great or good — for up to three stars and a score out of 1000.

What you’ll play

36 works by 14 composers, cut into short phrases. A first course of 9 phrases teaches the game; the stars you earn then open a collection per composer.

Johann Pachelbel (1653–1706): Canon in D major.
Christian Petzold (1677–1733): Minuet in G major.
Johann Sebastian Bach (1685–1750): Minuet in B-flat major (Notebook for Anna Magdalena Bach); Minuet in A minor (Notebook for Anna Magdalena Bach).
Wolfgang Amadeus Mozart (1756–1791): Sonata No. 11, Menuetto; Eine kleine Nachtmusik; Piano Sonata No. 16 in C major; Sonata No. 11, “Turkish March”.
Ludwig van Beethoven (1770–1827): “Pathétique” Sonata, Adagio cantabile; Sonata No. 20, Tempo di menuetto; Symphony No. 9, “Ode to Joy”; Für Elise.
Franz Schubert (1797–1828): Moment musical No. 3.
Friedrich Burgmüller (1806–1874): 25 Easy Studies, “Arabesque”.
Frédéric Chopin (1810–1849): Nocturne in E-flat major; Prelude in C major; “Raindrop” Prelude; Prelude in E minor; Prelude in A major; Waltz in B minor.
Robert Schumann (1810–1856): Album for the Young, “The Happy Farmer”; Album for the Young, “Melody”; Scenes from Childhood, “Of Foreign Lands and Peoples”; Scenes from Childhood, “Träumerei”.
Johannes Brahms (1833–1897): Waltz in A-flat major.
Pyotr Ilyich Tchaikovsky (1840–1893): Album for the Young, “Old French Song”; Album for the Young, “Morning Prayer”.
Edvard Grieg (1843–1907): Peer Gynt, “Åse’s Death”; Peer Gynt, “Morning Mood”; Peer Gynt, “In the Hall of the Mountain King”.
Claude Debussy (1862–1918): First Arabesque; Second Arabesque; Suite bergamasque, “Clair de lune”.
Erik Satie (1866–1925): Gnossienne No. 1; Gymnopédie No. 1; Gymnopédie No. 3.

Why it is different

Every result is verifiable. The physics are deterministic: the same construction gives the same result, to the bit, in every browser. The leaderboard replays each run on the server before ranking it.
Share a run, not a video. A replay link rebuilds your exact construction on someone else’s screen; once every phrase of a piece is done, your balls can play the whole piece in a row.
Learn who wrote it. Each composer is introduced with a portrait and a short biography the first time you meet them.
Free, without ads or trackers. No account needed to play; an email sign-in link is there only if you want your progress on several devices.

Questions

Is Fallegro free?: Yes. There are no ads, no purchases and no account to create: you play in the browser straight away.
Do I need to install anything?: No. Fallegro runs in any recent browser, on a computer or a phone, in portrait or landscape.
Do I need to read music?: No. Each key shows its note name and its place in the phrase, and a timeline under the scene shows when each note should sound. The ear does the rest.
Where does the music come from?: From public-domain works. The melodies come from MIDI files of the Mutopia Project, simplified so a ball can play them; the piano is the Salamander Grand Piano.
How does the leaderboard stay fair?: The game sends your construction, not your score. The server replays it with the same deterministic physics and only ranks the run if the result is identical. Runs played after asking for a hint or the solution are not ranked.
Can I keep my progress on another device?: Yes. Without an account, a one-time code moves your stars and badges to another device. With an email address, a sign-in link restores them anywhere. No password either way.