The LEGO DUPLO theme was introduced as far back as 1969 and is designed for children ages 1 to 5. It features DUPLO figures which are much larger than minifigures and DUPLO blocks which are about twice the length, width, and height of a standard System brick. Like LEGO System, DUPLO also has subthemes that are often junior versions of System themes, like Pirates and Castle and licensed themes like Disney and Super Heros.
1998 LEGO Sets
In 1998, LEGO released several new sets and themes, including the LEGO Star Wars theme, which was based on the Star Wars movies and featured models of characters, vehicles, and locations from the films. This theme was extremely popular and helped to boost LEGO's sales and popularity. 1998 was also the year that LEGO introduced the LEGO Mindstorms theme, which was a line of sets that allowed users to build and program robots using LEGO bricks and a computer.