The entire Story can be played in one sitting of about 2+ hours. There are 6 Chapters total in the story intertwined with a lengthy plot line. If not for the plot line dialog and transitions, the game could be completed in an even shorter time period.
The actual game play is quite enjoyable and tie-ins to the Star Wars franchise certainly help. Who hasnt wanted to fling storm troopers into a wall with the flick of a finger? But the actual puzzles presented are incredibly simple, making the game just a paint-by-numbers sort of experience.
After you complete the 6 levels, its difficult to imagine that youll want to play the game again (especially with the un-skippable cut scenes). As a result, I think this game may only be reserved for the most die-hard Star Wars fan, and even then with the understanding that your $9.99 will not get you long term replayability.