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. Book of Ra is actually quite simple, but you have to know the rules anyway. If you see the playing surface of Book of Ra for the first time, it can be quite. Being one of the most widely played online slot machines, you are probably quite familiar with the Book of Ra. The aim of this game is to get a line with 5 similar.