Investing in bricks of the tiny plastic sort can be surprisingly lucrative. The top-performing LEGO theme has surged in value by an average of almost 20% a year, beating everything from the stock market to classic cars. And believe it or not, some sets have seen typical average annual growth of well over 1,000%.

Keeping in mind that continued robust growth isn't guaranteed, read on to discover the 25 LEGO themes seeing the current highest annual growth, with figures courtesy of collectors' website BrickEconomy on 23 May 2025. 

Figures quoted are for new and sealed sets.