LEGO has produced various seasonal and holiday-themed sets over the years. These sets often coincide with holidays like Christmas, Easter, Halloween, and Valentine's Day, among others. The LEGO Basic theme, which began in the 1970s, was designed to be a more general, non-thematic series of sets. Unlike the themed sets that revolve around concepts, the Basic theme provided a collection of standard LEGO bricks and pieces.
1977 LEGO Sets
In 1977, LEGO released several new sets and themes, including the LEGO City theme, which introduced models of city life such as houses, stores, and vehicles. 1977 was also the year that LEGO introduced the LEGO System, which was a standardized system of bricks and connectors that allowed for more flexible and versatile building. The LEGO System included a wide range of bricks in different colors and sizes, as well as new elements such as windows, doors, and roofs. Other notable sets and themes released by LEGO in 1977 included the LEGO Space theme, which introduced new models of spaceships and alien minifigures, and the LEGO Castle theme, which expanded upon the castle sets released in previous years.