(IGRA also recognizes a third form of Indian gaming, class I (meaning traditional tribal ceremonial games), but exempts it from both federal and state jurisdiction.)Ĭlass II gambling is governed by a tribal ordinance that must meet federal guidelines and be approved by the NIGC. Under the IGRA, there are 2 major kinds of gambling, each with its own regulatory mechanism. Federal law regulates two distinct types of gambling on Indian land.