Every Forge makes one family of sound from scratch — gunfire, sci-fi weapons, impacts, UI clicks. Nothing is pre-recorded. You dial the thing that made the sound, and the sound comes out the other end.
Which means you never run out, nothing is shared with every other game that bought the same pack, and what you make is yours.
Pick a projectile and a target, set size, velocity, density, hardness and shape, and it works out what the collision would actually do — contact time, energy, ring-out, the modes that get excited. The force is not the sound; it excites the modes.
It has a preset system and batch export, so a set of impacts comes out in one go.
▶ OPEN IMPACT FORGEfree, in your browser, no account
Impact Forge is half built, and it says so on its own screen. Six stages were planned; three exist. 1 AIR, 2 IMPACT and 3 TARGET work — the approach, the contact, the target hit. 4 MATERIAL, 5 RESULT and 6 DEBRIS are greyed out, and its footer reads "stages 1-3" so nobody has to guess.
It is free, it works, and it is genuinely useful for hits and flybys today. It is not finished, and there is no plugin version of it.
Three Forges are finished and on Fab as Unreal Editor plugins. Each one designs sound in a tab inside the editor and writes SoundCue and MetaSound assets straight into your open project. Each has a free browser version too, so you can hear what it does before you spend anything.
One Forge per family of sound, each built on the physics of the thing that actually makes it. A gunshot is not a plasma bolt is not a crate hitting a floor, and pretending one synth covers all three is how you get sounds that are almost right.
Four more are planned. They are named below and nothing else — no screenshots and no promises, because none of them is built yet.
The browser versions run entirely on your machine. Nothing is uploaded, there is no account, and there are no trackers on this page.
The plugins are editor-only. They add nothing to your packaged game — what they build are ordinary Unreal assets that ship like any other asset.
Royalty free. Every sound you generate is yours, in any project, commercial or not, with no attribution.
Built for a desktop screen. These are laid out like hardware, not like a web page. A phone will struggle.