This game is easily one of my greatest childhood obsessions equal that of Fallout and Thief. One of the few games with proper inventory management, it's the game that Bioshock tried so hard to be like but failed. I wish I had more praise so I could give it to it!
I'm usually not one for the point and click mystery games and I did have to use a walkthrough to get through some mysteries. But the characters were flawless, the whole thing executed in a believable post-humanity setting where Man is deified and the robots he made isn't sure if he ever existed or if he's just superstition. But it was the story that really drew me in, the little tidbits of story where you slowly found out that what you thought were facts weren't and the final piece in the puzzle where you were finally made aware who you are. Buy it.