This is one of the largest sets made by Lego. Often Lego will use several different colors internally to distinguish different parts. However a lot of this set is the very similar in color. This can make the build more challenging but not impossible. Be warned the one thing the instructions do not tell you is that all the motors have to be interconnected before you test them. If they are not properly interconnected the test will not run. You could be stuck for quite a while trying to figure out what you did wrong during the build process not realizing it's a connectivity issue. This was my first Lego set that uses your cell phone. Quite interesting

If your a lego fan this model is a must have. I enjoyed the complexity of the model. this one has 7 motors to control the multiple functions.

I’ve been using it to pick up all my daughters duplos :P Entertaining and definitely a good purchase.

Really cool. Was a Xmas present for my son. Insane building detail. Must have patients.

I am a true fan of LEGO and I appreciate BestBuy for listening to me and offered a refund should the original box came in defaced with stickers of any type that would affect the value. I would order LEGO products through BestBuy again.