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RTP Book Of Riches by RubyPlay is a five-reel slot set in Ancient Egypt, with 10 fixed paylines and a reported RTP of 94.89%. The game uses medium to high volatility, a hit frequency of 30.6%, and a maximum win of 5,100x the stake. Players can use the demo version to play for free and practice before playing for real money.
The main feature is the Growing Symbol mechanic. During a spin, a symbol can turn gold, and after the standard win is paid, that symbol expands to cover the full reel and awards an additional payout. This same idea also appears in the Free Games bonus, where a random symbol is selected to become gold and trigger the expanding reel effect.
The review page for Book Of Riches slot highlights a straightforward structure built around standard spins and bonus rounds rather than complex side features. As a free demo slot, it gives a clear view of the reels, paylines, and bonus mechanics before any real-money play.
