The LEGO DUPLO Construction sets, spanning 2010 to 2016, introduce young children to the world of building and construction. Key sets include "Stone Quarry" (5653), released in 2010, which features a working crane and conveyor belt; "Big Construction Site" (10813), from 2016, which includes a bulldozer, truck, and crane; "Road Construction" (5652), released in 2010, featuring a steamroller and road worker; and "Dump Truck" (5651), also from 2010, which includes a truck with tipping function. These sets are designed to develop fine motor skills and encourage imaginative play through construction-themed scenarios.
2013 LEGO Sets
2013 included a number of notable theme releases including the Legends of Chima, The Lone Ranger, Galaxy Squad, Teenage Mutant Ninja Turtles, Jake and the Never Land Pirates and Mickey Mouse & Friends. The flagship release was Legends of Chima with the coincided premier of The Legends of Chima TV Show on Cartoon Network. However, LEGO unfortunately did retire a number of well-loved themes such as Monster Fighters, SpongeBob SquarePants, Cars and Dino. One interesting note is that in 2013, LEGO started changing from 4-digit set numbers to 5-digit set numbers. 2013 was also the year that LEGO release the exclusive Mr. Gold in its collectable minifigures blind bags. This event single handled created one of the greatest investment opportunities for collections LEGO has seen.