There's a good demo at their site http://2dboy.com/games.php (you can also get it through Steam). The presentation is very slick (atmospheric, with a dark undertone reminiscent of the original Charlie and the Chocolate Factory), and the puzzles are interesting and varied.
Both movies had somewhat dark undertones. I know many people were freaked out by the Wilder "tunnel" sequence -- apparently enough to get the movie on Bravo's 100 Scariest Movie Moments list.
I can understand that, but I read the novel in childhood. To me, the 70's film's scariness seemed superficial and insincere compared with the 00's version. (Which is not what you'd expect, given that I was still a kid when I saw the first film version.) Maybe it's just Depp's portrayal pushing the "creepy" meter to 11 is what did it for me. (Wilder's seemed resigned to each child's fate, while Depp's possessed morbid fascination with each "accident.")
Don't forget the "We'll be chopped up by the exhaust fans unless we start burping" and the "fat kid gets stuck in a pipe until the pressure blasts him out". Oh, and Wonka's creepy counterspy guy.
