A poker or game chip has an outer ring and an inner disk. The inner disk is typically engaged with the outer ring, but may be disengaged by pushing on the inner disk. When the chips are in a stack, pushing on an inner disk causes it to disengage with the outer ring, and engage in the outer ring of an adjacent chip. In a stack of chips, all of the chips may have a moveable inner disk and, upon application of pressure, may be shifted to engage with the outer rim of an adjacent chip, thereby causing the stack of chips to lock. A stack of chips is thereby secured together, so that the chips will not easily disengage and spread along the top of the table.