Hi (And sorry for the late response!) I've been trying to make a linux version of the demo but usually something else ends up taking priority (as this would require me to install and test it on linux) So a linux demo is planned, it might just take a few days! I'll let you know if/ when it's up. Thanks :)
Feel free to reach me directly for GamingOnLinux at contact@gamingonlinux.com :)