This is a knock rummy game with slot machine symbols on the cards. The deck has 8 cards each of five different suit symbols plus 12 useless lemon cards. Each player antes, gets 5 cards and can draw from the deck or the discard pile. A cloth mat shows point values for various hands. A player knocks when he thinks he can beat everyone else. If this caller wins, he collects the chip value on the chart from the others. If not, the person with the highest scoring hand collects from everyone including double from the failed caller. The antes build up a jackpot every hand which is collected by anyone who gets five of a kind. - BoardGameGeek