I've built a few advanced LEGO sets, many for IGN. But building the new LEGO R2-D2 was challenging and difficult in a way that those builds were not. This is not a build designed for multitasking, where you can watch a movie or browse social media while constructing it. It demands your undivided attention, which for many LEGO enthusiasts, is as good an excuse as any to buckle down and shut out the ambient noise and distractions.