With the Marbles Challenge marble run from Buki, two players can engage in thrilling marble races. The multi-part race track consists of colorful building elements and offers varied sections such as cascades, whirlpools, and hairpin curves. Equipped with a shared race start, the 9 included marbles head out onto the track. Through interactive elements like hand pumps and chicanes, opposing marbles can be deliberately slowed down or knocked off the track. At the end of the course, a pinball mechanism, a point grid, and the finish line decide the victory. The modular system combines construction ideas with direct competition.