You won’t find these at casinos.Ĭlass II games are games of chance based on bingo and similar games, like pull-tabs or lotteries. Class I refers to simple, traditional social games for small prizes and is not controlled by the IGRA. Class I, II, and III Gamesįor legal reasons, the IGRA created 3 different classes of gambling. The IGRA was signed into law in 1988 and established the framework for Indian gaming. It gave the authority to tribes to conduct, license, and regulate gaming. To understand how, or even why bingo-based slot machines exist, it helps to have a quick background on Native-American (NA) gambling.