The first challenge involves teams having to complete a LEGO City by filling in these empty blocks of land. They were given 15 hours to complete the challenge.

Teams have seven hours to make an amazing space-themed creation, but they will be judged on how spectacularly it breaks when destroyed by various means: baseball bat, high-speed crash, 6m drop or explosives.

In the first elimination, teams must turn everyday items that have been cut in half from normal to incredible. A bike, a typewriter, a TV and a violin must be morphed into something completely new using only Lego.

Teams must break apart Brickman's parrot to create something original in four hours. They'll then build an impressive three-storey apartment in 10 hours, stacking on top of each other's.

In a test of their engineering skills, teams must construct a bridge across a 2m canyon with no centre support; the winning structure will be the one to withstand the most weight. With 10 hours on the clock, the race is on.

Imaginations are let loose in this challenge where teams must create an evil lair for a supervillain Minifigure in 13 hours, including a vehicle. The least impressive villain world will ultimately send its makers home.

Teams must duplicate the classic DeLorean car from Back to the Future - the real thing present for reference. Next, they re-create an iconic moment in cinema in a vignette on their tables, with the least impressive team saying farewell.

The four remaining teams each contribute to a Time Train diorama built in 16 hours. From the Wild West, the Future, Prehistoric and Medieval Times, this challenge will mark the end of one team's journey and reveal our grand finalists.

Three teams battle it out in the grand finale. With 28 hours to build, they can now create their ultimate masterpiece. Judged by public vote, Brickman and a top Lego designer.

Eight teams have 15 hours to build a 'whole new world' to win not only the famous Golden Brick, giving immunity, but the Flash Jordy Brick, where they can use season one's famous Jordy as their runner to the Brick Pit.

The teams have 10 hours to make a showstopping Hero Shot, one that looks like the ultimate moment in a movie. They must pick a story that will explode using their four elements: chalk, water, glitter and slime.

In the first elimination, teams must create a classic fairy tale scene. They will have 12 hours to complete a fairy story that is recognisable and impressive. For one duo, the chance to be this season's Lego Masters slips away.

A double-header challenge sees the remaining teams build a tower as tall as they can in two hours. Then, in one of the hardest builds so far, they must create magic from one hanging brick - a careful measure of weight and balance.

In a test of their engineering skills, the six teams have to build a structure that can withstand increasing shake factors. The team that survives the highest shake factor will win immunity.

The third elimination hangs over the teams' heads as they are challenged with building a 3D art piece out of Lego. With one team safe with immunity, four teams go head-to-head to create incredible and beautiful 3D Lego art.

In another elimination, the teams face two challenges. The first must be a story that lives above and below their tables, essentially telling two stories. The two teams with the lowest scores then battle it out in a Retro Rebuild.

The ultimate challenge comes to life when the contestants are blown away to discover it's all about Star Wars! Not only do they get to build their favourite ships, but are thrilled when a new Star Wars LEGO Brick Pit is revealed.

Another elimination sees the contestants have to make extraordinary builds that not only look amazing but can go underwater. Does LEGO sink or float? We'll find out

In the penultimate episode, teams face two challenges. The first one sees them only able to use pieces from a smashed LEGO Harley-Davidson. In the second challenge, they must create a building that works in both day and night.

The final episode is here and it's down to our final three teams to impress not only Brickman (and host Hamish) but hundreds of kids, parents, and LEGO fans to find out who will be the ultimate LEGO Master.

Teams have to build a stunt vehicle that has to go up a ramp and soar through a ring of fire, clear nine LEGO school buses, and explode on the ground which will be captured in slow motion.

Teams must create a song title out of LEGO, and make their builds clear enough that a musical mystery guest can guess what song they have built without them saying a word.

The teams build a car of the future, and then turn something old into something new. The first challenge sees one team win an advantage, while the second challenge is an elimination.

With 10 hours on the clock, the teams' challenge is to build something set to mini-fig scale that is whole on one side and when you spin it around, reveals a build and a world that has been completely cut in half on the other side.

Teams must create a bridge that can survive two shake plates. If more than one bridge can survive all 12 levels of shaking, then aesthetics will decide the winner.