Casino gaming is emerging as a leisure activity for the senior adult population. Finding out key motivations for older adults to spend time in casino gaming is fundamental to determining the future casino patronage intention of this growing customer segment. This study developed a comprehensive inventory of senior casino gaming motivations by way of an exploratory approach. The research also generated a scale development procedure to find five distinctive senior casino gaming motivation dimensions: winning and thrill, socialization, escape, enjoyment, and curiosity. Ultimately, confirmatory factor model was parsimonious and captured various dimensions of senior casino gaming motivation.