In the United States, there are a variety of lAWS governing gambling. While many states have legalized casino-style gambling, such as slot machines and blackjack, other forms of gambling, such as poker and bingo, are still considered illegal under federal law.
However, there is no federal prohibition on free bingo games.
As a result, free bingo games are generally legal in the United States. However, there may be local regulations in place that prohibit free bingo games.
If you are concerned about your local lAWS governing gambling, it is best to check with your local authorities.