Sabayon Linux GNOME 15.05
http://linux.softpedia.com/publisher/SabayonLinux-905.html
Sabayon Linux GNOME is an open source Linux distribution based on the Gentoo Linux operating system and built around the powerful GNOME desktop environment. The Sabayon project also provides separate editions with the KDE, Xfce and Openbox desktop environments.

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Availability, boot options and supported platforms

It is available for download as Live DVD ISO images, supporting only the 64-bit (amd64) architecture. They can be deployed to blank or RW DVD discs, as well as to USB flash drives for grater portability, bootable from the BIOS of most PCs.

The Live DVDs are mostly used to start the live environment without installing anything on your computer, but you can also use the bootable mediums to directly install the operating system on a local disk drive, enter the safe graphics mode in case your video card is not supported, and drop to a shell prompt.

There are three different installation modes on this Sabayon edition. While the first one, simply called "Installation" will allow users to install the distribution with the standard features that any end user expects from this project, the second and third ones let you to install a Media Center or Steam Big Picture.
State-of-the-art desktop environment