That was my gut feeling too, or at least something Tahoe related. I reckon they’re using Gemshell based on the game icon, which they’ve also been talking about

That was my gut feeling too, or at least something Tahoe related. I reckon they’re using Gemshell based on the game icon, which they’ve also been talking about on their YouTube channel. On Gemshell’s store page (https://l0om.itch.io/gemshell https://l0om.itch.io/gemshell) it seems they’re in turn using Neutralino JS, which should be using a Webview, like Tauri.