well i bought it in the steam xmas sale, but i haven't started playing it yet due to graphic texture-loading issues. textures of some objects take a noticeable time to be displayed, which i found to be annoying, even though i have a reasonably powerful pc.
apparently the next amd gfx driver
is meant to fix these problems, combined with a forthcoming rage update/patch.
however, there's no information that i could find about when this rage update is going to be released.
i'm waiting until then.