There is a special place in hell for people not making Mac deployment :D
Viewing post in Pixelscape Islands (Demo) comments
Haha, I appreciate the more positive phrasing, but it won't be possible to build a native linux app with this engine. I've heard good things about running apps from this engine through WINE, and when it comes to Steam it will utilize that built in feature, hopefully. Never say never though...a port in the future could always happen as things change.
The engine was originally windows focused and has been updated over the years to port to other OS, but with limitations, and no Linux. The next major version will have native cross-platform support, but it could be years away still.
I'd love to make all of my games available on all platforms in the future, so I'll keep hoping, watching, and waiting.