The Lego Ideas 21331 Sonic The Hedgehog Green Hill Zone Complete Box is a plastic construction set featuring 1125 pieces, designed for ages 18 and above. This retired set, released in 2022, is based on the popular Sega character Sonic the Hedgehog and includes a brick separator for easy building. Packaged in a box, this set allows fans to recreate the iconic Green Hill Zone from the classic platformer game. With dimensions of 398mm in length, 280mm in height, and 229mm in width, this complete set provides hours of entertainment for Lego enthusiasts and Sonic fans alike.