Create random melodies as you play, and listen to them repeating and evolving into something new. Echo Sings at Night is a relaxing musical game built around the idea of generative music by Brian Eno: an emerging song, made of simple rules, that becomes greater than the sum of its parts.

Warning: Play the desktop version for best performances.

Made under 48 hours for the GMTK Jam 2020, with the theme “Out of Control”.


  • Left Click: Shoot
  • F/F11: Fullscreen
  • ESC: Quit

Additional controls added after the jam:

  • Mouse Wheel: Select instrument
  • Right Click: Change musical scale
  • Space: Toggle sequencer mode


Samples from  Philharmonia Orchestra sounds samples, FreePats Project and Stereo Rhodes samples.

Sound effect from BBC.

Font is Chivo Light by Omnibus Type.


Download 45 MB
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Download 48 MB

Development log


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La musique a la fin n'est pas très jolie mais l'ambiance est la et le jeu est bien polish. Bravo :)

A very elegant game. I tried 3 times with satisfying results. It's a nice break from the usual jam game, well done :)

Incroyable - quel bonheur ! Félicitation pour ce jeu <3

Ça n'a pas produit de résultat très mélodieux avec moi...

Néanmoins j'adore l'expérimentation. <3