When a toy helicopter can “crash,” flash red, and add its own sound effects the moment a child tips it over, the question stops being what the model is and becomes who is driving the story.
That tension sits at the centre of Lego’s new Smart Play system, unveiled at CES 2026 in Las Vegas. The company describes the launch as its most significant change in decades: a set of classic-looking elements Smart Bricks, Smart Minifigures, and Smart Tag tiles—designed to make builds respond with light, sound, and motion-based reactions. Lego says the aim is to bring models “to life” while keeping play physical and “screen-free,” and the first wave is scheduled to arrive in March, led by a trio of Star Wars sets.
To play specialists, the announcement lands in a different place. Josh Golin, executive director of children’s wellbeing group Fairplay, argued that “Smart Bricks” risk shifting creative control away from children. “As anyone who has ever watched a child play with old-school Legos knows, children’s Lego creations already do move and make noises through the power of children’s imaginations,” he told the BBC. “But with the release of Smart Bricks, Lego is taking play out of the hands of children and putting it into the tiny sensors of these so-called ‘smart’ devices.”
Under the hood, Lego’s pitch is plainly engineering led. The Smart Brick is a 2×4 block that contains sensors, lights, a small sound synthesiser, an accelerometer, and a custom chip, enabling it to sense motion, position, and distance and react accordingly. In demos, a birthday-cake build recognised candles being blown out and triggered cheering and a song. A helicopter played whooshing audio when rotated, then switched to a crash effect when mishandled. Tom Donaldson, Lego’s head of Creative Play Lab, said the goal is to respond to children’s actions in ways that “hopefully inspire and surprise the user to keep them continuing to play”.
For Lego, the design challenge is not simply miniaturisation; it is integration. Interactive features only matter if they remain compatible with the ecosystem that made Lego a multi-generation standard: the ability to combine sets, improvise new objects, and reuse pieces across years. The company says Smart Play elements remain compatible with existing Lego building, positioning the system as an additive layer rather than a replacement. That matters in practice, because electronic novelty in toys often fades quickly if it lives inside a sealed, single-purpose product.
Supporters of a blended approach to play do not dismiss the idea outright. Andrew Manches, professor of children and technology at the University of Edinburgh, said the beauty of Lego lies in “the freedom to create, re-create, and adapt simple blocks into endless stories powered by children’s imagination,” while also welcoming efforts to integrate physical and digital play using tools that react to real-world interaction. He noted that smaller and cheaper components have made it easier for toymakers to embed interactivity without turning toys into screens.
The deeper unease comes from a different engineering problem: trust. Smart toys have a long history of turning basic play features—voices, movement, locations—into data streams. Even where products are designed to minimise collection, the category is still evaluated through a privacy-and-security lens shaped by earlier failures across the “internet connected toy” market. US law already frames connected toys as online services in many contexts: the Children’s Online Privacy Protection Rule (COPPA) places obligations on operators that collect personal information from children under 13, including obtaining verifiable parental consent and maintaining data security. For families, the key practical question becomes less about whether a toy is clever and more about what it records, what it retains, and what it transmits.
Lego’s Smart Play messaging leans hard into reassurance by implication: a “screen-free” experience, reaction in real time, and a platform meant to last “for many years.” The system’s emphasis on embedded sensing and local feedback—lights, sounds, motion-triggered responses—signals an attempt to deliver the “alive” feeling without requiring constant attention to a phone or tablet. At the same time, modern interactive toys increasingly arrive with companion apps for setup, updates, and feature expansion, and Manches pointed to continuing concerns around the security and privacy of emerging smart toys, particularly where AI is involved.
Lego has tried versions of physical-digital crossover before. Since 2017 it has released augmented-reality apps, and it has partnered with major game brands to reach children who already spend time in online worlds. The Smart Play system sits on that same continuum, but it shifts the balance: instead of using a screen to add a digital layer to a build, it embeds responsiveness inside the bricks themselves.
That is why the debate is unlikely to be settled by novelty alone. If Smart Bricks remain a light-touch enhancement reacting to children’s actions without prescribing the narrative they can function as another kind of building material. If the system’s “correct” interactions become the point, the toy risks narrowing what made Lego durable: open-endedness.
For parents and designers alike, Smart Bricks offer a familiar trade-off in a new form: more responsiveness and spectacle in the moment, alongside heightened expectations for transparency, restraint, and security in everything that sits behind the click of a brick.
