If you like starwars then build mode will be fun + new cas but without a new lifestate "jedi" it falls flat, no new career options, shortens the journey. The story is very repetitive,
If they had done a jedi lifestate or a active career that involved the new content my review would be much different, using the Droid and lightsabers, but unfortunately they didn't.
But if your really into the star wars franchise great. There's always a "new hope" that there will be a "revenge of the sims" and a "return of the jedi". 20.00 not really worth it id think more a stuff pack price of 10.00