Lego is snapping a computer inside a classic brick in what it’s calling its biggest play upgrade since the minifigure. The screen-free smart brick brings lights, sounds and Star Wars swagger to builds—proof even Lego thinks playtime needed a power-up.
At the heart of the SMART Play system is a bespoke microchip that is 4.1 millimetres wide, loaded with motion and light sensors, a microphone, LEDs and a tiny speaker. Linked with NFC tiles and minifigures, the brick reacts in real time, bringing builds to life with glowing effects and soundscapes where lightsabers buzz, engines rumble and blasters crackle.
The system is made up of three components that operate together being a smart brick, smart tags and smart minifigures. The smart brick is a standard 2×4 Lego piece containing sensors that detect movement and nearby components. Smart tags are tiles that signal how the brick should behave, while smart minifigures trigger different responses when placed close to the brick, including variations in sound and behaviour depending on the character.
Together, these elements allow the brick to respond to physical actions such as movement, rotation and placement, producing different outputs based on how it is used. The combination of tags and minifigures enables multiple interactions and outcomes, including alternative responses and hidden features, allowing the system to be used repeatedly in different ways without requiring screens or external connectivity.
Initially announced at the Consumer Electronics show in Las Vegas, in early 2025, the smart toy will be going live for pre-order in just two days.
Lego is positioning Smart Play as the boldest leap forward the brand has made since it gave its worlds characters with the debut of the minifigure in the late 70s.
Notably, the system is built to work entirely offline, no internet, AI or cameras with the tech kept quietly in the background so kids can just play, while updates are handled separately via an optional app.
Julia Goldin, chief product and marketing officer said this was made to directly address parental concerns about excessive screen time for many children.
“There’s not one parent, I don’t think out there, that doesn’t want their child to have more physical play versus just screen time,” she said. “A small child can actually take it and play with it safely. They don’t need a screen, they don’t need a power button, they don’t need to know anything. They can just start playing.”
