I bought this game on a whim. I agree with some of the stuff people say but ah. Here's a longer winded "review" of the game.
Buying the collectors edition, i flicked through the artwork book as the game was installing. Nothing really caught my eye and made me stop until i flicked past some softcore drawn porn. Wondering why, i left it until i started the game.
Running it on an e6600, 2gb ram, Vista Ultimate and a 8800GTX is fine. I can run it at 1920x1200 everything max... the game even defaulted those settings! Obviously then i have no quams with the slowdowns or graphics problems others here have.
The intro was stupidly long. And i mean stupidly long. It was like a mini-movie in itself which isnt a bad thing necessarily, it's just towards the end i got bored and i started wondering "what the fuck is actually going on?". Average start to the game for sure and when i actually started a new game i swear i just sat back for 15 minutes or so and just watched cutscenes trying to figure out what was going on. Maybe it was just me, i dont know if others had this problem.
In terms of actual gameplay, it's a standard rpg style like Gothic. FP controls arent bad, although sometimes it can be annoying since sometimes your character refuses to start a new attack for no reason until you make him roll to one side or something. It's really wierd. Combat is a bit of a click fest, although it rewards you when you do timed clicking. Do it well enough and your guys does some fancy footwork that can end up in a severed head or something equally gruesome.
Be warned though: You will spend 3/4 of your time running around the outside area and talking to people. Probably more running than talking really. Sometimes though when talking to people they talk about something you're supposed to know, but you dont, not only that but most of the time i just felt myself switching off and ignoring the dude/dudette talking.
Skills tree is a bit weak as well. There isnt really one, just upgrades to your character if you understand the difference. Potions... these guys are a bit problematic. Instead of the standard "this potions gives you x health straight away" the health potions (and every other potion that affects your health/endurance/poison levels) acts slowly. So instead you get a higher regeneration of health, not instant health. I guess it adds forward thinking into fighting, but most of the time i just forgot and got my arse trounced bad.
Bah i'm a bit of a rambler, it's too early in the morning and im sure none of that made much sense.
To sum up: Decent game with a long long play time (claimed 80 hours, probably more 65/70 hours) that looks good if you can run it. Couple of niggling problems, but if you dont mind clicking when attacking enemies and you remember to take your potions, you should enjoy it.