Lego Debuts Smart Brick at CES, Bringing Light, Sound and Silicon Into the Classic 2x4

• The Smart Brick embeds a custom chip, sensors, lights, and sound inside a standard Lego brick, with no apps or screens required.
• Bricks interact with tagged minifigures and each other via Legos encrypted BrickNet system for synchronized effects.
• The rollout begins March 1 with premium Star Wars sets priced from $69.99 to $159.99.

The hottest product unveiled at CES 2026 this week？ Legos “Smart Brick,” a tech-loaded 2×4 that adds lights, sounds and sensor-driven responses to traditional Lego sets—without requiring apps, displays, or external devices.

The Smart Brick embeds a miniature computer inside a standard Lego form factor. At its core is a custom application-specific integrated circuit, or ASIC, smaller than a single Lego stud.

The chip powers LED lighting effects, a built-in speaker with synthesized sound, an accelerometer to detect movement and orientation, NFC sensors to identify nearby pieces, and a light sensor that reacts to environmental changes. The brick also uses near-field magnetic positioning to enable precise interactions between components.

This is where the fun begins!

Lego calls the system its biggest change to the “System-in-Play” since the minifigure debuted in 1978. Unlike previous interactive sets, the Smart Brick is designed to operate entirely in the physical world. There is no power button, no screen and no required setup. The brick wakes on interaction and charges wirelessly via induction.

What the Smart Brick does

The real novelty lies in how the Smart Brick interacts with so-called Smart Tags—tiny embedded identifiers placed in compatible minifigures, tiles and accessories. When a tagged piece comes close, the brick triggers context-specific responses. A Luke Skywalker minifigure near a lightsaber can produce a low hum and glowing effect. Tilt an X-Wing build, and engine sounds or laser blasts fire in sync with the motion.

Multiple Smart Bricks can also communicate with one another using Legos proprietary Bluetooth-based protocol, BrickNet. The encrypted system allows sets to form a mesh network, enabling coordinated behavior across builds—such as timing races, tracking collisions, or triggering synchronized sound effects across a scene.

Lego emphasized privacy and child safety throughout the CES presentation. The microphone embedded in the brick functions only as a virtual button for simple voice commands and does not record audio. There is no camera, no cloud connectivity and no onboard AI processing.

“We wanted to enhance the magic of Lego without pulling kids into digital worlds,” said Julia Goldin, Legos chief product and marketing officer.

The Smart Brick will launch first in Star Wars-themed sets, available globally beginning March 1, with preorders opening Jan. 9. Initial releases include Lukes Red Five X-Wing at $99.99, a $69.99 TIE Fighter, and a $159.99 Throne Room Duel and A-Wing bundle featuring interactive lightsaber battles. To keep prices from climbing higher, the sets are slightly smaller than standard minifig-scale models.

A mixed reaction

Reaction online has been divided. Fans praised the technology as a clever fusion of nostalgia and modern engineering, with some calling it one of Legos most ambitious ideas in years. Tech analysts noted that the approach differentiates Lego from rivals by blending digital behavior with tactile play, rather than replacing it.

Analysts echoed this, noting how it positions Lego ahead in the toy industry by merging analog and digital play without compromising core values. Dave Filoni, Lucasfilm‘s Chief Creative Officer, joined Lego onstage at CES, underscoring the Star Wars partnership’s role in bringing cinematic elements to life.

Others highlighted affordability issues, with one X user joking that it “just empties your wallet.”

I dont need to hear about tech. I need to hear about why its fun. How a kid can enjoy play time. Where is that？

Why are these press releases written like theyre trying to sell the product to adults, despite the incessant assurance that the product is for kids？