The semifinal episode of Lego Masters Season 5 delivered high-stakes drama as four teams competed for the final two spots in the championship round. Airing on July 21, 2025, the FOX reality competition show challenged contestants to build Great Ball Contraptions that would transport LEGO balls in a continuous circuit. Host Will Arnett oversaw the intense three-hour challenge while Brickmasters Amy Corbett and Jamie Berard evaluated each team's creativity and technical execution.
The competition required teams to create functional storytelling mechanisms using motors, gears, and precise timing. Each contraption needed to seamlessly pass balls between builds while maintaining structural integrity.
The challenge proved demanding as multiple teams faced mechanical failures and design complications. After rigorous testing and evaluation, judges selected Anthony and Joe alongside Sage and Ian as the final two teams. Ben and Michael narrowly survived elimination, while Corey and Rebecca were sent home despite their innovative concept.
What happened in the last episode of Lego Masters?
The Lego Masters teams received three hours to construct elaborate ball-moving machines with compelling narratives. The builds required sophisticated engineering to ensure smooth ball transport across all four contraptions. Each team chose distinct themes to differentiate their creations.
Sage and Ian developed a fairy tale concept but encountered early difficulties with ball movement. Their mechanism initially failed during testing phases. However, the duo successfully troubleshot their design and achieved functional operation before time expired.
Ben and Michael pursued a kitchen theme featuring spaghetti and meatballs. Their build incorporated humor and whimsical elements. Unfortunately, gear mechanism problems plagued their contraption throughout construction. Limited time prevented necessary repairs to their mechanical systems.
Corey and Rebecca designed a hairbrush-themed structure with unique visual appeal. They added protective bumpers during construction to control ball velocity. Despite these adjustments, their build experienced structural instability in crucial final moments.
Anthony and Joe created an amusement park narrative showing a child evading parental supervision. Their story followed the ball through multiple scenes representing childhood rebellion. Early testing revealed significant issues, but they managed to stabilize their mechanics before judging commenced.
The decisive ball test exposed weaknesses in multiple builds. Sage and Ian's contraption experienced minor technical glitches but maintained overall functionality. Ben and Michael faced similar mechanical hiccups that affected performance consistency.
Corey and Rebecca's structure encountered the most severe problems. Their build began deteriorating during testing while ball movement remained inconsistent. These issues significantly impacted their final evaluation scores.
What was the final verdict from the judges?
Amy Corbett praised Anthony and Joe's cohesive storytelling and reliable mechanical performance. Jamie Berard described their build as a complete narrative journey with strong execution. The Lego Masters judges also commended Sage and Ian for their problem-solving abilities and successful integration of story elements with structural design.
Ben and Michael received recognition for their entertaining concept and lighthearted approach. However, mechanical failures undermined their technical achievement. Corey and Rebecca impressed judges with their creative vision, but structural collapse and poor ball flow led to their elimination.
Will Arnett emphasized how minor technical issues could compromise entire builds during this advanced competition stage.
Anthony and Joe advance to the finale after delivering the evening's strongest performance. Sage and Ian secured the second finalist position through determination and technical recovery. The championship round will feature an open-ended challenge allowing teams complete creative freedom for their final builds.
The Season 5 finale of Lego Masters airs next week, determining which team claims the coveted title and grand prize.
LEGO Masters USA airs Mondays at 8 p.m. ET/PT on Fox, with new episodes available to stream the next day on Hulu.