itch.io

I am currently playing the demo on Linux (Debian 10 Buster) with no issues, I just needed to make the file "Alisa Demo.x86_64" executable with chmod +x command, after that I just open the file by double clicking from the file manager (Dolphin on KDE). Are you running the game from a path under the root user home directory (like /root/Downloads)? (That's what it seems from the output you posted) That can be a problem with graphical applications on Linux