Relax Gaming rewrites history in Book of 99, where players battle amongst the gods in a first-of-its-kind 99RTP ‘Book of’ slot!Collecting 99 books in the Base Game triggers 10 free spins, an added route to the typical 3-symbol trigger. In this Greek odyssey warriors are welcome, one is chosen at random before heading into the ancient empire in the Bonus Round. Once the mythical character is chosen, it gains expanding abilities in the Free Spins round, growing to fill the whole reel and catapulting win potential up to 5000x one’s bet!Wins may not be set in stone, but the potential certainly is – when 3 or more book symbols land in the Bonus Round, 10 free spins are re-triggered, sending win potential soaring once again.Don’t judge a book by its cover, this ‘book of’ game is unlike the others. Get your players spinning, Midas touch could be within reach!