To close out 2021, today we’re getting a first look at what will likely be the very last LEGO set unveil of the year. And it may very well be the most eagerly awaited showcase of the year, too! Arriving as the most recent LEGO Ideas set, video game fans and builders alike will soon be able to assemble the iconic Sonic level, Green Hill Zone, thanks to the upcoming LEGO set number 21331.