The pocket-console sound.
Chunky square-wave bleeps, the tone of handheld games and chiptune music. It cuts through everything, which is exactly why those games used it. Square waves suit single-line melodies more than chords.
Gameboy
Chunky 8-bit bleeps from a pocket console.
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Labels
Octave
0
Semitones
0
Sustain
Sustain off · hold Shift
Volume
Reverb
Mix
Glide
Glide time
No MIDI keyboard? Play with your computer keys: bottom rows are the lower octave, top rows the higher one. Hold Shift to sustain. ← → octave, ↑ ↓ semitone.
Online chiptune synth
An 8-bit synth in your browser
Play it from a controller.
A MIDI keyboard gives you a proper octave range for fast melodies, which is where this sound lives. The arrow keys move you up and down if you are using letter keys.
Free, and instant.
Nothing to download and no account: it is built by the browser as you play, so it starts the moment the page opens.