The Witcher games are frankly uninteresting for all the praise they receive, since they're basically an RPG whose basic concept and gameplay is dated for over a decade but with better graphics. They're like The Conduit for PC - when there's nothing else around to hype...
I'd play Dark Souls first, for a bit of what hardcore, well-made RPGs have to offer, if you are into that sort of thing. Otherwise or after DS, I'd go for the BioWare games, in any order.







