A variety of different production features have helped the lego company throughout its development. Lego has been able to design many of the most popular toys in the world due to these features. These features include the creation of a unique interlocking mechanism and the use of plastic in place of other materials. These unique features allowed the company to become the leading toy maker around the globe.

The 1960s saw the company expand rapidly. Dagny, Godtfred Kirk Christiansens cousin, joined the company in the year 1960 as a model builder. Dagny was adept at creating large-scale models and worlds which were displayed address in the showroom. This was an excellent way to showcase the possibilities of LEGO bricks and also to entice children.

In 1971 the LEGO system began to expand into new frontiers with the addition of furniture pieces and dollhouses. The LEGO system grew further in 1972 with the introduction of ship and boat sets that had hull pieces that floated. The 1960s also saw the company begin its international expansion with sales in North America through a licensing agreement with Samsonite.

In the 1980s the company continued to expand and diversify, while also modernizing. This included the creation of an R&D department which has worked to keep the LEGO system on top of its game in terms of technological innovation. The introduction of themed sets enabled users to build specific models without having to build it on their own. This was the first step into more intricate building and also allowed children to gain more hands-on experience using Legos.