Book of ... mechanic

Merlin’s Grimoire
RTP: 94.2%
Merlin’s Grimoire
Mysterious Egypt
RTP: 95.5%
Mysterious Egypt
Mystery of the Nile
RTP: 94.36%
Mystery of the Nile
Naughty Nick’s Book
RTP: 94.28%
Naughty Nick’s Book
Oasis of Dead
RTP: 94.51%
Oasis of Dead