Over the last three years, builder and video creator Jason (JustBeardy) has been working on a massive motorized LEGO tribute to Sonic the Hedgehog’s Green Hill Zone. Built from roughly 30,000 bricks, the diorama draws on specific gameplay elements of the iconic level, all lovingly rendered in the 16-bit style of the classic SEGA Genesis game.

While the front view of the level is slick and studless with every pixel in its place, a look behind the Technic scaffolding reveals how much mechanical wizardry went into making the scene come alive. Jason would have been done sooner, but needed a new drive train to power so many motorized elements.

Of course, a project like this is meant to be seen in motion, so it’s best to watch the reveal video to appreciate Jason’s most ambitious work to date. And if you’re interested in how the builder solved all the elaborate mechanical functions, there’s a series of 34 behind-the-scenes videos showing the build process from the beginning. Feeling nostalgic for classic Sonic? Jason shares free instructions for Dr. Robotnik’s Egg Wrecker as seen in the diorama.