Summary: This really shouldn't be considered an entire game. If I paid full price for it I'd be really upset, but I paid less than 10 dollars so I got what I paid for. Realistically I see this as episode 1 (even though it's divided in 7 episodes/levels) of a larger game. Sort of like the Back to the Future game. This game is a combination of point and click adventure, with some basic action sequences, and some RPG like dialogue/economy system.
Summary: To start off with, I've never seen the show...ever...not even a commercial for it. Sounds crazy, but it's true. I don't have cable. Anyway, as far as the plot goes, the other reviewers are right, it's a bit confusing. Characters appear and disappear for the remainder of the game with little to no warning. The plot is mediocre and a little melodramatic, and the action scenes are few and far between. That being said, the game itself, gameplay and all, isn't that bad.
Summary: I played this years ago, and back when I didn't really watch Lost it was okay. Now though, I tried replaying it and the voice acting, character models and animation are just cringeworthy. Its kind of frustrating a often times boring as well. I honestly expected more of Ubisoft.