It's a voice generation and audio stylization tool that doesn't use AI. It's heavily inspired by Mike Klubnika's Tartarus Engine and the sound and atmosphere of PSX horror games. It's also great for prototyping! At 00:16 of the trailer, you can hear the type of voices you can generate with it.

You can also import your own audio clips and add effects to them. Pick from 10+ built-in effects. My personal favourite is the Radio effect. You can check out the tool here: https://polyshades.itch.io/voicifier