The first mega build is Hulk Buster Iron Man and The Hulk. The Hulk Buster Iron Man took LEGO designers 575 hours to design and create and it is made up of 78,083 pieces. The Hulk took 200 hours to design and create and uses up 22,560 pieces.
The second mega build is Ninjago ninja Lloyd rappelling from the ceiling. It uses 15,225 pieces and took 155 hours to complete.
The third and final mega build is Scooby Doo themed with the mystery machine and all the Scooby Doo main characters. This model over 85 hours to design and 525 hours to build. It consists of 70,875 pieces.