I have played very few RPGs as a gamer. Most of them being utmost masterpieces, some being driveled messes.  I would consider The Witcher, while wonky in most of it's content, to be one of the best RPGs I've ever played. The reason is because of how the game's presented. The story doesn't drag on like most RPGs. It starts off with a quick intro for each chapter, then grabs you by the heart and squeezes it until your arteries go nuts. Every moment is hinted with dark foreshadowing, only to then express the true answer to the mysteries that are oh-so shown in confusing fashion. The answer is that being plot twists. And they're not just slow, minor twists. They're explosives ones.
 
If you're smart enough to know how to tell a story, you should, by knowledge, understand that a tale doesn't need twists to be good. And many games have disobeyed that and constantly created "shocking twists" just to make the player intrigued. While the previous paragraph stated that The Witcher is a twisted tale, it's more then just twists. It's the choices that Geralt, the main character, is given. There are no moral choices. There is no good or evil. It's just you, the world, the society, the races, and--if I forgot to mention, mind the joke: YOU. 
 
The world of The Witcher is surprisingly realistic, following a J.R. Tolkien-like world of dragons, magic, monsters, dwarves, elves, and those bastardy tallywhackers known as the humans. It contains gruesome violence, criminal underworlds, cussing, prostitutes, war, sex, and alcohol--things that you wouldn't expect from a folklore. It's a corrupted, if-not dreadful world of mind-boggling choices, most of them rash or easy.
 
While the story is presented in an outstanding fashion, it's not the main contribution that makes The Witcher so incredible. And explaining the rest of the game would make me go on-and-on much longer about the game's facets. Just buy it. Try out the demo if you're still  not interested. A game with such low sales and under appreciation is absolutely unacceptable to me. CDProjekt has proven to be a professional development team, and a charitable one at that. They released a free update for the game that completely recreates the character models, script, and animations. All being very wonky and goofy in the original version. If only development teams and their publishers were this generous.
 
If you have a snuff-enough PC that can run a game such as Half-Life2 and you're an RPG fan, buy the Witcher. Really, that's all I can say. I haven't even beaten the game, and I can already say that it's an epic win. It's very fun, satisfying, and hard to exit the program's screen.