Bluebird Toys released compact but action-packed playsets. The engines and rolling stock had metal rivet wheels that allowed them to run on three-dimensional, yellow, plastic rails. Features included a tunnel, station and the ability to transfer loads from a truck into Bulstrode. Smaller sets appeared later on. They could fold up and be carried to other locations. After the other sets successes, a magnetic set was available that allowed you to control the trains.