The jackpots are also different in size. Every winning spin can be gambled for a chance to double it if players are feeling very lucky. It doesn't come with as many side-features as some slot games do, but it hasmore than enough to keep most players occupied quite nicely. The gamble system is a simple two selection process. There is also the case of differences in the maximum bet on a spin and the features of the bonuses, especially the free spins. After setting all these, you can now spin the reels. Here's a Book of Ra review to help you decide if you want to use the game or not. So, they dont have much difference here. The classic version and deluxe version have the free spins feature.