The Smart Brick looks very similar to a normal 2x4 Lego brick, but it contains a custom Application Specific Integrated Circuit (ASIC) chip which is smaller than one of the studs on the brick itself. It’s joined by an accelerometer and a copper coil, and Lego has created its own Play Engine and Neighbor Position Measurement (NPM) system.

The LEGO Group says it will introduce a new “SMART Play" system in 2026 designed to make brick-built creations respond to how children move, hold and imagine with their toys.

A day on from the official reveal of LEGO Smart Brick, the company has responded to concerns that its big announcement poses a risk to its core basis in physical play.

The new sensor-packed Smart Play Brick will land this spring as part of a special Star Wars collection. The update adds interactive lights and sound to the Lego experience—including the minifigs.

LAS VEGAS, NEVADA – JANUARY 05: Julia Goldin, Chief Product & Marketing Officer, the LEGO Group on stage during the LEGO SMART Play launch event at Mandalay Bay Convention Center on January 05, 2026 in Las Vegas, Nevada. (Photo by David Becker/Getty Images for The LEGO Group)

The Danish company presents Smart Brick at CES, an incredible 2x4 piece of technology that recognizes the creations we build.