This transforms into a ‘Special Expanding’ symbol during free spins. During the free spins, a ‘Wild’ symbol may randomly show up on the third reel. However, it is worth to know, that in case of Book of Athena slot machine, a ‘Wild’ symbol is also available. It is not a secret, that it may lead to high prizes. In case of Book of Ra Athena slot machine, following three or more ‘Scatter’ symbols show up, You win 10 free spins with the Special Expanding symbol. If someone has ever played on any of the Book of Ra slot machines, exactly knows what happens next. In case of Book of Athena slot machine, three or more ‘Book’ symbols are required to win the bonus game. It is very similar to the Book of Ra slot machine. Book of Athena slot machine is a casino game equipped with 5 reels, 3 lines and 10 winner lines.