Build, race, and roll with Rail Racers Max, the ultimate expansion for your magnetic rail world. This 80-piece set is loaded with trapdoor tiles, curved and short track pieces, quarter arcs, and classic tiles so kids can create multi-level raceways, daring drops, and one-of-a-kind ball runs. Designed to work with any existing MAGNA-TILES set (Classic tiles or microMAGS!), it invites kids to experiment with height, speed, and direction as they snap tiles together and send balls racing through their custom course.