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Lego (stylized as LEGO) is a line of plastic construction toys that are manufactured by The Lego Group, a privately held company based in Billund, Denmark. The company's flagship product, Lego, is a set of colourful interlocking bricks accompanied by an array of gears, figurines (called minifigures) and various other combinable parts. Lego building blocks have inspired a global subculture that has exploded since their debut in 1949. The brand has grown to include movies, games, competitions and multiple Legoland amusement parks. In 1998, the Lego franchise added Lego Mindstorms, which is a hybrid hardware-software platform produced for the development of programmable robots based on Lego building blocks. The Lego Mindstorms Robotics Invention System set is the best-selling Lego set ever, with over 1 million sales globally since its launch.

More than 300 different kinds of Lego Star Wars products are on sale now. The most popular is the Millennium Falcon, piloted by Lego Han Solo. Many versions have been released, and it continues to sell out each time. The Ultimate Collector's Series-edition Lego Millennium Falcon that was released in 2007 contains 5,195 pieces, which is the second-most to ever be included in a Lego kit. Once built, that Millennium Falcon measures in at a whopping 84-cm long, 56-cm wide, and 21-cm tall. Even the inside of the ship has been faithfully replicated to resemble the real thing. At the time of release, it sold for 50,000\ but is now considered a rare collectible and is sold at high prices by resellers on the internet.

In addition to the regular minifigure-scale sets, Lego has released several sets for the Ultimate Collector Series. These models are often considerably larger, more detailed, and meant more for display purposes than other sets. They often cost more than regular Lego sets as well. Many of them include an information plaque and often a display stand. The largest of these is 75192, the 2017 UCS version of the Millennium Falcon, complete with ten minifigures. At 7,541 pieces, it is the largest Star Wars Lego set ever released, as well as the largest set of any collection ever commercially released. The newest Ultimate Collector Series set is also the 75192 Millennium Falcon. In June 2015 an unopened box of the older 2007 Millennium Falcon Lego set was auctioned online for 5,000 euros ($5,556 USD at the time), making it the most expensive Lego set ever.