In the Book of Ra classic, players can gain a bonus game when they achieve three or more book symbols on a line. About Playlines and Bets, players can activate any number of paylines when engaged in the game. Itreplaces all other symbols in winning combinations. Another way to play this virtual slot machine is to sign up with an online casino and use their play for fun mode. There are two modes of play for the Book. It is one of the best known in the industry. It not only functions as a wild symbol, substituting for others to create a winning combination, but also triggers a round of 10 free spins if it appears at least three times. To see how much each symbol is worth, just click the Paytable button.