BOOK OF RA substitutes for all symbols except the scattered SPECIAL EXPANDING SYMBOL of the feature. An additional 6 th reel can be activated via EXTRA. Book of Ra Deluxe slots are now available online. Play one of these slot machines, created by Novomatic, for free or real money at top casino sites. Novomatic Book of Ra. Book of Ra is one of the top games manufactured by Novomatic and is a top place in the top 10 Gaminator games. Every gaminator Sizzling Hot · Lucky Lady's Charm · Book of Ra deluxe · Columbus.