Bfxr
Bfxr uses effect categories, waveforms, parameter mutation, and WAV export to create short jumps, pickups, explosions, lasers, and related cues.
Why use it
A prototype or game jam can gain a coherent feedback-sound set in minutes, with more control than hunting for unrelated samples.
Where it fits
Use art, animation, audio, levels, and narrative to make the game easy to read and its world convincing.
What to check
Its sound is distinctly synthetic and retro; production projects often need layering, post-processing, or replacement with custom effects.