Abstract: The invention relates to a modular ball track system, comprising the following: a plurality of module elements (12; 12?), the exterior shape of all of which is the same regular polygon in plan view and each of which has—an upper face (14), a lower face (16) opposite the upper face, and—a number of lateral surfaces (18), said number corresponding to the number of corners of said module element, wherein each module element (12; 12?) forms at least one section (20, 22) of a ball track on the upper face (14) of the module element, said section passing through a lateral surface (18) of the module element, and a plug socket (24) protrudes from each module element (12; 12?) on the lower face (16) of the module element, and—a base (32) with a plurality of uniformly arranged recesses (34) for receiving a respective plug socket (24), wherein the plurality of recesses (34) are arranged on the base (32) in a grid, the size (s) of the grid corresponds to the incircle diameter of the regular polygon which forms the exterio