I wonder, was it you who made the Seedship port for Ubuntu Touch/UBports back in the day? Would that be possible for Chiron Gate too? I’m not sure if they can/want to handle paid apps though.
No, that wasn't me, and I have no plans to do this for Beyond the Chiron Gate. If you buy it on itch.io and download the browser version to your Ubuntu Touch you should be able to open it in the mobile browser though.