Make sound effects and music for your games

The Nightloop app: song strip, note grids, and drum sequencer Nightloop works best on a desktop browser. Tap to open anyway.

A free arcade sound chip in your browser. Roll a sound, tweak the knobs, build a loop, then export WAV, MP3, or MIDI. No signup, no samples, no experience needed.

SOUND EFFECTS

Roll a sound, tweak the knobs

Pick a preset like Zap, Coin, or Explosion and Nightloop rolls a fresh take every click. Shape it with eight big knobs, then go deeper in the advanced rack when you want to.

  • Preset rail18 game-ready sounds, endless takes of each.
  • Waveform scopeSee exactly what you will hear.
  • Knob bankPunch, length, sweep, grit: the whole voice on one row.
The Nightloop sound effects screen: preset rail, waveform scope, knob bank
The Nightloop music looper: song strip with section cards and note grids

MUSIC LOOPER

Sketch a loop, arrange a song

Roll a Starter to get going, then click and drag notes on the scale-locked grid. Chain sections into a song with intro, loop, and outro.

  • Note gridScale-locked rows: no wrong notes.
  • Section cardsArrange, reorder, loop, and reuse parts.
  • StartersChill, Action, Boss, Menu, Y2K: Get started with a click.
MIDI import & exportRound-trip ideas with your other tools.
WAV / MP3 exportGame-ready audio, straight to your engine.
Share linksSend a loop to a teammate in one click.
Runs on AnythingIn the browser. Nothing to install.

MADE BY FLOWLAB

Make the game too.

Nightloop is built by Flowlab, the game creation platform where you build, play, and share your own games right in the browser. Your sounds have a home waiting.

Open flowlab.io

Questions

What is Nightloop?

Nightloop is a free browser tool for making game audio: a sound effects generator and a music looper sharing one synth engine. It runs entirely in your browser with nothing to install.

Is it free?

Yes. Nightloop is free to use, with no signup required. It is built and maintained by Flowlab, the browser game creation platform.

What can I export?

Sound effects export as WAV or MP3. Songs and loops export as WAV, MP3, or standard MIDI files that open in any DAW. You can also share any sound or song with a link.

Can I use the sounds in my game?

Yes. Everything you make in Nightloop is yours to use in your games and projects, commercial or otherwise.

ROLL. TWEAK. LOOP.

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