I purchased Deus Ex 2: Invisible War originally for Xbox and the controls felt right and the game was fun. However, this game does not do justice to the original (but any sequel rarely does). There is a lot of Deus Ex: The Conspiracy in the tone of the game, but the original was made specifically for PC so the controls make more sense with a keyboard and mouse. I would play this 10 times through before playing "Human Revolution". Developers need to realize when they take on a "Franchise" title that they should stick to the basics of the game and build from them, not tear out entire features, and replace control schemes utterly! With all this ranting aside, I can honestly say that Deus Ex 2 is worth the $10 price here on GOG. You'll have a fun adventure within a world of conspiracies and choice.
When all my friends were obsessed with Diablo II I found myself playing Nox, again.... and again! There's a great feature that changes the game depending on what class you play as, and there's a hell of a lot of voice acting! Which was unheard of back then. If you like diablo, then you'll love nox, FACT. I would kill for a sequel but I fear that I will never see one! :(