Abstract: A device for arranging playing elements such as dominoes and the like in upstanding disposition on a surface, in serial arrangement and spaced so that they will all be knocked over when the end member of the series falls over, comprises an element storage member and a wheel structure in a housing. The wheel structure consists of two axially spaced discs with peripheral notches. As the wheel structure is rolled across the surface, the elements are taken from the storage element, around the wheel while supported in the notches, and deposited on the surface at the bottom of the wheel where they are disengaged from the wheel in an upright disposition.