The pairs are tasked with creating a roller coaster that incorporates a mechanical lift and a drop.

The builders ransack a detective's office and leave with an item of their choice that they must replicate into a one-to-one scale model; "LEGO Masters" Season 3 winner, Stacey Roy, must play detective and spot which items are real.

Contestants create evil lairs and fly vehicles through their Lego worlds; actor Terry Crews.

Teams put a stunt "minifigure" to the test in an explosive stunt action scene. The duos must craft an immersive build filled with slime, water, glitter and colored dust to create the ultimate action movie moment.

Structural integrity and beauty come together in the most earth-shattering challenge, as teams build a structure strong enough to withstand an earthquake; which designs perform the best and pass the LEGO "brickter scale" rating system.

The teams must build a gravity-defying castle off a giant LEGO cliff.

As the competition heightens, the remaining contestants are expected to raise the stakes and elevate their work - quite literally - when the teams are tasked with building a beautiful structure in mid-air. Building tables will be removed from the LEGO workspace and duos will be challenged to create a build of their choosing from the foundation of one floating LEGO technic brick. Discover who will take LEGO to new heights.

The three remaining teams must create a massive build complete with storytelling and creativity.

The talented teams are introduced and tasked with building an eye-catching float in the first-ever LEGO Day Parade.

The contestants must interpret a story that is read aloud from a book selected for this competition.

Each team must transform a putting green into a playable mini golf hole.

The pairs of contestants are introduced; each duo must craft one section of a theme park.

Phil Lord and Christopher Miller task the contestants with a movie-themed challenge.

This week's challenge is the ultimate test in ingenuity and engineering, as teams will create incredible and wearable hats made entirely of LEGO bricks. Then, teams must model their designs on the LEGO runway, hoping their creations don't collapse into pieces.

Teams use bricks to create an off-road remote-controlled vehicle for an ultimate race.

The three remaining teams have 24 hours to make a construction that has both a day and a night look; the winner is revealed and receives the $100,000 prize.

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.

Celebrity builders Sophia Bush, Holly Robinson Peete, Eric McCormack and Lil Rel Howery.

The remaining teams must craft a thrilling Batmobile that will excite the judges.

Teams each build a unique and exciting creature that comes to life as it descends a moving waterfall.

Teams include Sophia Bush, Holly Robinson Peete, Eric McCormack.

A thrilling "Star Wars"-themed episode, where teams must rebuild the galaxy by transforming the remnants of a destroyed planet into a new creation.

Teams are tasked with doing the unthinkable -- creating a build that bursts with movement and tells a compelling story.

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 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.

Contestants are split into teams, where they compete to build a fast and fashionable race car.

Robin Thicke, Finesse Mitchell, Leslie Jordan and Cheryl Hines build aerodynamic snowmobiles.

Returning fan-favorites contestants David Guedes, Caleb Schilling, Krystle Starr and Randal Wilson, and celebrities NeNe Leaks, Marshawn Lynch, Kelly Osbourne and Rob Riggle pair together to compete in holiday-themed challenges.

The daring duos embark on a mission to construct the ultimate motorized party boat that showcases their unique personalities.

Teams must make luxurious bags that are both functional and runway-worthy by showcasing their creations in a photo shoot; show-stopping bags secure a coveted magazine cover and the fashion fails are at risk of elimination.

The duos divide into two big teams to construct a mesmerizing show consisting of four breathtaking acts.

The contestants bring dinosaurs and special effects to life in their "Jurassic World: Dominion"-inspired builds; actor Chris Pratt makes a guest appearance.