The Smart Brick is the same size as a regular 4x2 Lego piece and is universal, meaning you could put the same brick in any number of Lego sets and have a different result. Inside it is a speaker, accelerometers, light and sound sensors, an onboard synthesiser and a custom mixed-signal ASIC chip to run it all.

Lego has unveiled new digital “smart bricks” that light up, emit sounds and respond to movement in its “most revolutionary innovation” in nearly 50 years.

The new brick looks and clicks into place like a regular one but its advanced electronics sense other smart bricks and minifigures and respond with real-time audio or light effects.