Lego showed off a custom PC built using over 20,000 Lego bricks. It’s been made to look like an elaborate haunted mansion, complete with a gargoyle lever that you pull to power it on and a spider soaking in a water-cooling reservoir filled with green liquid.

And that’s just on the inside of the case. It closes shut to reveal what looks like just a really intricate Lego build — not even a PC — with the glow of the machine’s LEDs and fans showing through its windows.