The pairs of contestants are introduced; each duo must craft one section of a theme park, and when the sections are combined, they create an impressive theme park world.

Each duo must create a space-themed build; the creations must impress the judges when they are smashed in slow motion; Mayim Bialik guest judges.

Each team is given an everyday object that has been sliced in two and they are tasked with building its other half.

Phil Lord and Christopher Miller, the writers and directors behind "The LEGO Movie," task the contestants with a movie-themed challenge.

The remaining contestants are given the challenge of making a city block that is brought together as a huge city at the end of the episode.

The remaining teams must build a car and a strong bridge; the creations are stress tested for strength.