I wishlisted your game on GOG ^^
But Linux is not listed on GOG,I'm sad.
As a Renpy game,I think I should be able to play It without problem on Kubuntu :)
Thank you so much for your support! I don't know why Roadwarden is listed on GOG as not compatible with Linux, I believe the game's publisher - who's behind the page - simply forgot. I'll let them know right away.
The few tests that the kind people interested in the game ran so far make me believe the game will work just fine on Linux.