Keno is a popular game that could be compared with the Giant State. It is very easy to play and extremely popular in most casinos for this reason alone.
There are 80 numbers on ping pong balls, which are usually spun, similar to the lottery. Players need to pick up to 15 numbers that they think will be drawn. Eventually the house will draw out 15 numbers and players need to match them up to get a win. Bets are place by players buying a keno ticket, where they fill out the numbers that they think are eventually going to be the big winners for the day.
Players can essentially mark the ticket with individual numbers, or they can go for clusters of numbers using a combination ticket. They can use combination tickets in order to try and find different ways to win and give themselves a better chance of a cash prize.
Different casinos will have different rules regarding payouts and the min/max bets allowed. When the dealer is ready, all bets will be stopped. The numbers are drawn and the winners are paid off; the cycle starts all over again!