Book of Books

Book of Books by Peter & Sons is a high-volatility slot with 5 reels, 3 rows and 25 paylines in the base game. The default RTP is 96.10%, with bets ranging from 0.10 to 100. The design centres on a bonus mode built around Scatter symbols, with a feature buy-in also available.

In the base game, two Scatters do not start free spins but can award powerups that are carried into the bonus round. These may add extra free spins, an additional expanding symbol, or an expanding-symbol multiplier. When 3, 4 or 5 Scatters land, the game launches Free Spins with 7 spins plus any collected extras, while the reel set expands from 5x3 to 5x4 or 5x5, increasing the number of paylines.

The demo version lets players play for free and practice before playing for real money. During Free Spins, selected expanding symbols can stretch across full reels and pay without needing wild substitution or adjacent positions. Retriggers can add more spins and expand the feature further, while the stated maximum payout reaches 10,000x.