SFX Forge — Offline Retro Sound Effect Generator

Every game needs sound. Make them offline.

SFX Forge generates retro sound effects — jumps, coins, lasers, explosions, UI blips and victory chimes — entirely inside your browser. Pick a preset, hit Randomize, tweak the knobs, export a clean 16-bit WAV. No install. No account. No upload. No internet after download.

What it does

• 48 presets across 8 categories — jump, coin, laser, hit, power-up, explosion, UI, chime (8 unlocked in the Free edition)
• 6 waveforms — square (with pulse width), sine, noise, saw, triangle, brown noise (3 unlocked in Free)
• Full sound-design controls — start/end pitch glide, attack / hold / release envelope, volume, low-pass & high-pass filter, tone jump (arpeggio)
• Live waveform preview — see the sound before you export it
• Randomize — one click, endless variations (game-jam friendly)
• WAV export — 44.1 kHz, 16-bit, mono, ready for Godot, Unity, GameMaker, Construct or anything that reads WAV
• English & Japanese UI

Free vs Full

Free: 3 waveforms, 8 presets, one-at-a-time WAV export.
Full: all 48 presets, all 6 waveforms, vibrato & delay effects, and one-click batch ZIP of every preset.
Get SFX Forge Full ($5)

100% offline by design

SFX Forge contains zero network code. Every sound is synthesized with the Web Audio API inside your tab — nothing is uploaded, nothing is recorded, no telemetry. It keeps working forever, even offline, from a single HTML file. Double-click, done.

Requirements

Any modern browser (Chrome, Edge, Firefox, Safari). Works on Windows, macOS, Linux.

You own your sounds

Generated sounds are 100% yours — use them in commercial projects, free of royalties. The software itself is licensed (no redistribution of the tool). See LICENSE.txt inside the ZIP.

More from capsuloom

RetroSample — offline audio retro converter: drop any WAV/MP3/OGG and crush it into crunchy console sound with bit depth, sample rate and wave shaping, 100% local, no uploads. Free edition (6 presets, bit crusher) + Full ($5, 16 presets, wave shaping, batch ZIP).

Updates included. Refunds follow itch.io policy.