Thanks for the feedback! While we're not planning a sequel currently, it's not out of the question for the future. You might like Palinurus, one of our oldest games, that is also on Steam.
As for the technical details, thank you for pointing this out to us! The newer versions of Ren'Py no longer support old Windows builds, and we'll make sure to update our pages ASAP.
Thank you again,
Tristan "Wolf" Barber, Watercress CEO