Book of Ra is an iconic slot machine brought to you by Novomatic. Using an Ancient Egypt theme, the slot played at 5 reels and 9 variable paylines tells the story of. Gameplay. The Book of Ra is a five reel slot machine with nine winlines. You can choose any number of lines between 1 and 9, although they. If you are all about playing a genuinely simple and rewarding slot, this game will not disappoint. Free to Play Novomatic Slot Machine Games. Reel King Mega.