The Book of Ra 6 slot machine is a modified version of the most popular development from Novomatic. RTP stands.5, meaning this is a high variance game, so you will have to be patient while waiting to score any significantamount of money. It adds another paying line and therefore increases the number of winning combinations. If the spin turned out to be a winning one during the manual mode, the Book of Ra 6 slot gives gamblers an opportunity to increase the size of the prize payouts with the help of a risk game. Bonus game consists of 10 free spins which brings you the added benefit of randomly chosen symbol that serves as joker for the duration of the bonus. This slot is similar. The unbelievable fun fact is that in 2014.o.R.