Many other versions followed suit. The symbol 'Book' serves as a joker symbol and the bonus symbol. If you do wish to continue free play slots, you can deposit as little as 10 usually to keep your account active. Butthat will only happen when you deposit real money. Free spins may be the only real bonus in the offering, but the 5000 times jackpot still lingers, and could prove to be a temptation too large to miss out. This brought about the demo or free play version. And as the wild, it can give a winning combination by pairing with any other symbol. This is offered in all major casinos, and you can use this site to learn and master the slot. The Book of Ra slot online will take you into the dark old tomb of the ancient Egyptian heroes to see what it is you can unearth there. The Book of Ra casino game is developed by the Novomatic group. You can choose between.02 and.00 per line in the Book of Ra slot.