I am having the same problem. What I found is that there is an error to extract unzip the files inside the folder AppData\Roaming\itch\apps\wet-dreams-spa\__MACOSX\Build
i thin i have the same problem "Failed to download file Build/WetDreamsSpa 2.91.framework.js.unityweb. Loading web pages via a file:// URL without a web server is not supported by this browser. Please use a local development web server to host Unity content, or use the Unity Build and Run option."
