I've only been using Ubuntu for a day now, so bear with me here.
I downloaded NightSkyHD from the Humble Indie Bundle website and it's now in my downloads folder.
I open my downloads folder, click on the "nightskyhd-linux-1324519044.tar.gz" folder and see that the file type for NightSkyHD is unknown. In Windows, the file would be ".exe".
Am I missing an application or something that lets me play games? Did I download the wrong file from the HIB website? Any help at all is appreciated.