Amazing History and In Game Puzzles.
Graphics : The 2D Scenarios are plain amazing and in good quality but the 3D characters are not very good, in fact they're only OK, not many options to configure , what makes the game look good is the AA, I suggest you to play with AA to have fun playing it.
Gameplay :
Well, the gameplay is just like any other point and click game, although this one has some new options such as showing all the possible areas you can click on the scenario, the diary, its a simple gameplay but those new features make the game easier than having to move the mouse on all the screen to finally find something
Some Lame Stuff :
The Characters talk too much and If you want to pee , you'd better go before playing it or you're going to miss something, you can also save the game before talking to a character to avoid missing clues, information.
If you're not a native English speaker/reader like me, you'd better find a translation patch for the game, or you're going to be confused on some parts of the game, like me.
Recommendation
Even with these lame stuff, I recommend this game, it's not perfect but it provides some fun, specially if you are a puzzle lover.