Book of Secrets Extra Slot

Review of the Book of Secrets Extra Slot

The Book of Secrets Extra slot is a variation of the popular Book of Secrets slot from Synot Games. True to its name, this version offers some additional features along with free spins and a gamble option. Players can also opt for a buy bonus to enhance their chances of winning big, with a maximum payout of 250,000 coins!

Start on a Journey to Ancient Egypt

Set in the mystical world of ancient Egypt, the Book of Secrets Extra slot from Synot Games introduces players to a courageous archaeologist on a quest to unearth the treasures hidden within a Pharaoh’s tomb.

The game features symbols like the intrepid explorer, a pharaoh mask, a green scarab, and an ankh cross as the high-paying icons, while standard playing card symbols represent the lower values. The Book of Secrets serves as both the wild and scatter symbol in this slot adventure.

Decipher Mysteries and Secure Wins

The Book of Secrets Extra online slot by Synot Games offers medium-high volatility action on a 5×3 grid layout with 10 fixed paylines and an impressive 96.07% RTP. Players can place bets ranging from 0.1 to 20 coins per spin for a chance at the following rewards:

Uncover Hidden Features for Lucrative Rewards

While playing the Book of Secrets Extra slot online, enjoy various bonus features, including:

• Free Spins

Trigger 10 free spins by landing 3 or more scatter symbols. During this round, a special symbol will be randomly selected from the regular symbols. Whenever this special symbol appears, it can expand to cover the entire reel and pay regardless of its position.

• The Gamble Feature

For wins under 125,000 coins, players can opt for the gamble feature. Guess the color of the face-down card to double your win, with the chance to repeat this up to 10 times. However, an incorrect guess results in losing the initial win.

• Buy Feature

Instead of waiting for scatters to trigger free spins, use the Buy Feature for instant access by wagering 100 times your stake (up to 200 coins maximum). Note that this feature is unavailable for UK players due to regulations.

Explore More Enigmatic Adventures

Delve into other mystical slots like Book of Alchemy by GameArt and Book of Anime by Fugaso for new adventures.

Discover Excitement with Synot Games

Having reviewed the Book of Secrets Extra slot, take the opportunity to enjoy this and many other thrilling Synot Games titles for free on our site. Start spinning now!

Jesse Miller iGaming Writer

Last Updated: June 1, 2025