Their schematic image is at the top of the interface. Take the challenge by clicking on the Risk button, and choose between red and black cards. The amount of the bet on each of the cards changes using the Card/Linemenu and can range from.01 to 10 credits. You also have the, book of Ra, a very important symbol. The total winning for the free spins is used as the bet. It introduces an additional sixth reel to the game. You will achieve your gains when there come the same symbols combination, left to right, in the winning line. The size of the line bet in the Book of Ra 6 is regulated as follows: On the control panel, find the Line / Bet menu; Use the - and buttons to select the needed amount; The minimum bet per line is 1 credit, and. How to Win at Book of Ra Deluxe Bingo. Rules opens the rules of the game. The Book of Ra Deluxe Bingo table game combines the most popular slot machine in the world and traditional table entertainment. Its use allows you to collect the winning combinations more often and expect larger amounts of prize payouts. The slot machines from the Novomatic Book of Ra series have acquired the status of cult games around the world thanks to the fact that its incredibly easy to get a large winning. After that, other numbers appear.