First, I heard that this game crashes every time on every Mac when played in windowed mode. I didn't know this when I downloaded the trial, so can't verify. This seems like a very hastily thrown together game, probably so it would come out around the same time as the movie. The graphics of the outside, non-game-play areas, are very nice, but the graphics of the game-play areas are just okay. But worst of all, the items to find seem "pasted" on and seem to "jump out" at you. The only ways they can make it seem difficult to find these pasted-on items is by making the scenes really dark, by having flashing "electricity" and by superimposing "migraine headache" effects onto the screen. The one mini game I played was a math game and way too easy; a third grader could have done it. One of the things you do is collect items and when they're all collected you click on a hot spot which opens up with three or four circles into which you must laboriously move your collected items, one by one by one. There is absolutely no challenge in this, just boring click and drag. This gets you some information or opens another scene.
I recommend you not buy this game at least until the price comes down.