The expanding icon in the free spin round will expand to cover up to three positions and this can drastically increase the overall payouts from the bonus feature. There is also an expanding symbol that will be in play, and this is chosen before the feature begins. As a rule, the extra spin bonus round brings a large reward, which is triggered with three or more scatters. While Book of Ra Deluxe has a low RTP of just over 95%, you can obtain some decent returns. This makes the game appealing to high rollers as well as casual slot fans. The supported betting options range from $0.01 to $40 per payline, so the maximum wager is $400 per spin. Offering 10 paylines you will find this gaming machine to be an affordable option, as you can change the bet amount before a spin of the reels. Book of Ra Deluxe is classified as a video slot machine, and it is one of the more popular products from Novomatic.