I enjoyed this game. The puzzles are logical; it's big, but easy to get from A to B. Its intriguing plot has you captivated and guessing, so it's addictive. The graphics are nice, if a bit old-hat (nicely drawn stills but little animation.) The big problem with this game? You can finish it without having solved all the riddles and puzzles. Whilst I'm all for non-linear gameplay, this is simply not good enough. The credits suddenly began rolling and I was only 3/4 through the game!! The last puzzle I solved (using simple deduction) must have been akin to "game over" in a shoot-em-up. I checked a walkthru on the net, and my worse fears were confirmed - I'd been dumped out of the game without having to solve the trickier puzzles.
Another problem - you need to be pixel-perfect and sweep every screen and direction with the mouse, or you won't find certain items (often placed in stupid locations - don't they have game testers any more? By the way, the story is also totally incomprehensible.
All in all, then, a good, but flawed game. The real shame here is that this game could have been great.