If you're not yet bored of it on telly, after four series, then snap up a copy. It certainly adds to the fun and the mystery.
Many might find it a little too slow though, there isn't as much out-and-out action as The Sun have liked but the makers have done a great job in keeping it as close to the real thing as possible.
That's to be applauded and means unlike most TV-influenced adventures, when you play Lost it does feel like you are just watching it. And that's as big a strength as it is an irritable problem.