Seven decades after introducing System in Play, The LEGO Group celebrates the simple but revolutionary idea that every LEGO element, made generations apart, can connect. This foundation of compatibility has allowed builders of all ages to combine themes, explore creativity, and transform a few LEGO bricks into anything imaginable.
Houses have been at the heart of The LEGO Group since the System in Play debuted in 1955. The original Town Plan set the stage with red-and-white buildings constructed on cardboard street layouts, before stability improved with the introduction of new brick designs. By the early 1970s, builders could create more intricate structures using modular elements, baseplates, and brick-built vehicles.
The arrival of the minifigure in 1978 ushered in a new era of roleplay, showcased in the 1983 Holiday Home, complete with detailed interiors and accessories. “Roleplay had become a massive thing,” explains Kristian Reimer Hauge, LEGO corporate historian. “The minifigure was the result of feedback in the Seventies, children saying we’d love to have someone to live in the house, or drive the car, or fly the plane.”
In the 1990s, imagination took center stage with playful builds, such as Poolside Paradise, which emphasized storytelling over realism.
By 2013, the Family House demonstrated how refined design and streamlined elements could deliver architectural detail and functionality. “The design team didn’t have all the element choices they had before, but the System was strong enough by now to allow them to create these fantastically detailed houses from what was available,” Hauge says. The same element could be both a roof tile and a tabletop.
The 2024 Modern House from the LEGO Creator 3-in-1 line showcases the significant advancements made to the System in Play. Designer Stijn Oom, who calls the assignment “daunting,” drew inspiration from contemporary architecture to create three build variations — a beach house, city high-rise, and forest cabin — highlighting the ongoing creativity made possible by the system’s consistency. “We’ll always have more opportunities, more possibilities for creating awesome houses,” Oom says.
From tabletop houses to full-scale installations like The LEGO House in Billund, the System in Play continues to spark imagination across generations.
