Gaming on virtual machines

I still keep Windows dual-booting along openSUSE for all that stuff that openSUSE cannot handle very well or nothing at all; for example, those games or applications that don't have native Linux versions or have a low rating on Wine.

But I'd like to change the scheme: leaving openSUSE 13.1 as single base OS (i.e., host) and Windows 8.1 Pro as virtualized OS by using VirtualBox or other virtualization software. Both 64 bit OS. This is, replacing dual-boot with virtualization.

But I also seek to also be able to do gaming on the virtual OS. Previously I did some search and found that VirtualBox only has experimental 3D acceleration and up to Direct3D 8/9, but may not work on Windows 8. So seemingly it wouldn't go very well. Then I looked about VMWare Player, which has better 3D acceleration, seemingly also up to Direct3D 9. Both VirtualBox and VMWare require their respective tools to be installed.

But in general I read that virtual machines don't use the GPU card directly, normally they kind of emulate a graphic device, so it wouldn't be good for what I seek. Until I found this:
http://www.overclock.net/t/1205216/g...irtual-machine
https://bbs.archlinux.org/viewtopic.php?id=162768
But seems far more complicated (and perhaps a bit unpractical) than the standard installing of a Linux host, a virtualization software, and a guest OS. There are also some terms/concepts I'm not familiarized with, such as pass-through, KVM, VFIO. Also read that there's still not much luck with Nvidia cards...

Anyway, I wanted to ask your opinion. Do you think gaming on a virtual Windows is possible? Would VMWare be enough, or would I need to try the hardcore stuff of the tutorials above? Could those ones work on openSUSE? If possible I seek to be able to run all the games and emulators that run correctly on the Windows installation.

Thanks.