Nice. First I had to install the Adobe Flash Player and restart Firefox and I could only access the Synth and Sampler but not the Vocoder and Sequencer.

The random presets are cool but it does seem too complex for it's needs, at least for games rather than a musician as there would be instrumental presets, and so a library of fixed preset would suit. It would be possible to play an actually melody or rhythm for an event, eg. pick up item. I suppose it would also be handy to get the sfxr data rather than the wav file export as to create the sound file in runtime. Ultimately, it's the sample and song data that only needed.
My experimental sfxr sequencer and tracker was something that I would like to redo to a simpler form, sort of like the Teenage Engineering Pocket
Operators.
