The CDX Fun Fair Series is a line of building block construction kits based around fairground and carnival style amusement rides. All of the models are engineered to function like their full sized counterparts, with rotating seats, cars, and platforms. The rides are very mechanical in operation, with numerous shafts, gears, and gear racks intermingling to create a beautiful symphony of movement. As a result, the Fun Fair models possess a high degree of playability and interaction. Best of all, they are reasonably priced and provide excellent value