Perfect for the child who already loves marble runs or construction toys, this set by Quadrilla takes marble running to a new level. Rather than the typical “follow directions to assemble and drop ball” experience, kids invest time and creative brainpower into designing challenging runs with multi-directional layouts. While most marble runs are plastic (and sometimes flimsy), this set’s 147 curved, straight and funnel pieces are made from solid wood. Although children as young as 4 can design with the Twist & Rail, in many cases, they’ll need help from a parent. However, there is enough challenging fun to keep mom or dad entertained. Older kids (up to 11, or even older, depending on interest), will also enjoy the set, which, in addition to the building pieces, includes 50 marbles, a “Smart Design Booklet,” and “Play Tips DVD.” The Twist & Rail is Quadrilla’s best selling set, and has won numerous awards, including the Oppenheim Toy Portfolio Platinum Award for 2006 and the American Specialty Toy Retailing Association’s “Best for Kids” Toy List for Holiday 2007. If you simply want to try the system out without making a big commitment, Quadrilla also sells the Marble Railway Basic Set for $44.99.