Over the years, the world of the PC RPG has gravitated towards action and adventure over dungeon crawls and conversation trees, which is a good thing or a bad thing, depending on where you stand. CD Projekt has decided to blend both the old and the new; a deep backstory based on the work of a popular Polish novelist, plus a meticulously motion-captured combat system with several layers of tactical consideration. It's also based on an unrecognizably better version of Neverwinter Nights' Aurora engine, with very large outdoor environments, a day/night cycle featuring moving shadows, a weather system, and very detailed people and places.
But as such things do not necessarily gel into a good game, The Witcher also benefits from an intriguingly ambiguous moral compass. Here, as in life, there is rarely a "good" or "evil" solution to a problem -- you must actually choose a long-term disposition, something that's lacking in a "role-playing game" genre defined too often by paper doll inventories and skill points. With a well-defined dark fantasy world, an interesting anti-hero, and a twisting plot, The Witcher is poised to remind people why they started playing RPGs in the first place.