LEGO Trains is one of the longer running themes that dates back from 1966 and ran up until 2006. During its run there were multiple sets released running on various power platforms from 4.5volt, to 9 and 12 volt sets. Later in 2011 LEGO released additional train sets using RC and Power Functions controllers under different themes like City.
2003 LEGO Sets
While 2003 proved to be a financial disaster for LEGO we did see a number of signification events that set the tone for future LEGO recovery and investments. Most important, LEGO introduced new realistic minifigure skin tones that affected licensed themes including Star Wars, Harry Potter, Basketball, Ferrari and Spider-Man, but kept yellow skin tones for all other minifigures. In 2003, the LEGO minifigure celebrated its 25th birthday with just under four billion minifigures being produced. LEGO that year introduced a number of new themes including Clikits, Designer, Sports which consisted of hokey, basketball and Gravity Games, World City and 4 Juniors which replaced the Jack Stone theme.