Abstract: Apparatus for playing a game or puzzle comprises a container which houses a plurality of balls of at least two identifiable kinds. The container defines a row of fixed compartments and a slide arranged in the container defines a movable row of compartments. The two rows of compartments are adjacent and parallel to each other, the slide having at least one more compartment than the container and each compartment being of a size such that it can accommodate only one member and having an open end adjacent the compartments of the other row to permit a member to enter or leave the compartment. The slide is arranged for oscillation between two extreme positions in each of which the open end of a respective end compartment of the slide is positioned to communicate with a track in the container interconnecting the two end compartments of the slide externally of the fixed compartments and the open ends of the remaining compartments of the slide are aligned with the open ends of the fixed compartments.