Take a look at our list of U.S. Smokefree Casinos and Gambling Facilities. There are at least 500 state-regulated gambling facilities that are required to be 100% smokefree indoors. Of the casinos and other facilities, most are required by state or local law to be smokefree. This list does not include all off-track betting (OTB) facilities. There are also a growing number of smokefree sovereign American Indian tribal casinos.