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RTP Book of Secrets Extra is a five-reel video slot from SYNOT Games with an archaeological theme built around a search for hidden treasure. The game uses 10 symbols and includes a Wild that can substitute for other symbols on the reels. When a Wild appears together with a Special symbol, it awards Free Spins, adding a bonus feature to the base game.
The slot’s published RTP range is 85.11% to 97.93%, while the maximum win is set at 6,525x the bet amount. Volatility and hit rate are listed without numeric values. Book of Secrets Extra is available in a demo version, allowing players to play for free and practice before playing for real money.
As an HTML5 title, the slot is designed to run on different devices and supports multiple languages. It is licensed and certified in several European jurisdictions. The game page can be used near the demo launcher for those looking to review the reels, symbols and Free Spins feature before trying the full version.
