This study examines the viewpoints of Macau and Singapore residents on the development of casino gambling and the social, economic, and environmental impacts that are thought to arise. It also assesses whether differences exist between socio-demographic groupings. The sample comprised 416 respondents from Macau and 409 from Singapore. An analysis using primarily descriptive statistics indicated both sub-samples had similar viewpoints although Macau residents tended to have higher scores pertaining to the consequences of gambling. It is suggested that the differences arise due to the greater exposure of Macau residents to the influences of casino development.