Teams face a Wicked-themed challenge, where each team is given a mystical spell to inspire their build, and they must skillfully hide the spell-related elements within their creation.
The remaining contestants build a wearable mask for a costume party; the masks must be durable enough to survive a grand entrance at the masquerade ball.
The five remaining teams are tasked with re-creating any item from Will Arnett's high school bedroom, where they must fool the eye of a special guest by replacing what was once a curated 90's item into a LEGO brick carbon copy.
The four remaining teams compete for a spot in the finale; each team is tasked with building a mechanism that successfully moves a ping-pong ball from one side of the studio to the other.
The remaining teams are tasked with building a final creation that blends personality with masterful skill in what is known as their "Master Build"; the final team takes home the $100,000 cash prize.