Small speakers hum as two "Star Wars"-themed Lego lightsabers clash. Lights beam from the top of a Lego-built airplane. A roaring engine sound kicks in as multiple vehicles race across the floor. It's ...

Lego has spent decades selling itself as the ultimate analog toy, a handful of plastic bricks that can become anything a child imagines. That is why the company’s new Smart Bricks, tiny blocks packed ...