Has main stream linux abandoned running games?

If your PC is connected to the internet, then not so (as Axeia pointed out). Also, even if not connected to the internet, recovering from a backup takes time, … far more time than it does to occassionally type the root password.

A complete hard drive cloning operation is OS independent, and will back up a dual boot setup. Pick the cloning application that is best for you. I used dd the other day on a PC with a triboot (winXP, winME, openSUSE), and it worked fine and it was fast (with the correct parameters included in the command).

This IMHO is bad advice. I recommend all new users to ignore this.

I don’t play games on openSUSE (other than chess, and setting up solitaire for my mother) so I can’t provide recommendations for getting games to run under Linux. Many users retain a dual boot (Linux/Windows) so as to play the games they want on their PC.

openSUSE-11.1 still comes with KDE-3.5.10, which is possibly the best KDE release to date.

I don’t think so. From my perspective, KDE-3.5.10 on openSUSE-11.1 is the best to date.

Again, reference your desire for games, give some thought to running a dual boot operation with openSUSE, and with the OS of your choice that runs games to the extent that you wish.