itch.io

I apologize, but the only versions of Roottrees still supported is the steam version. The itchio version will remain in the browser inefinitely as it was when I released it but the  itchio version is no longer hosted anywhere externally, nor will it receive any more updates.

You can download a working version from itch.io by installing the itch.io app which allows you to download working standalone versions of web apps (at least in theory - Unity can cause problems with its default settings! :( - however I can confirm it works for "The Roottrees are dead" as that is how I played it :)