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SynotGames
SynotGames
Book of Secrets Extra by SYNOT Games invites you back into the world of ancient Egyptian adventure, this time with a few extra twists that make every spin feel like part of a bigger story. Set on a five-reel grid with 10 fixed paylines, this video slot keeps the classic Book-style mechanics you know and love, but layers in features like a bonus buy option and a gamble choice, giving players a bit more control and excitement as they chase treasure and free spins. The theme is atmospheric without being over the top — pyramids, scarabs, and mysterious relics all set the tone for what could be your next big surprise spin.
| Category | Details |
| Game Provider | SYNOT Games |
| Launch Date | October 2022 |
| Game Type | Video Slot |
| Max Win | Up to 6,525× your stake |
| Rating | 4.0/5 |
At first glance it can feel familiar — symbols like the brave archaeologist, scarab beetles, pharaoh masks and ankhs sit alongside card values, all framed by hieroglyphs and the promise of hidden riches. But Synot Games have sprinkled some “extra” into the mix to keep fans of the original slot coming back. You’re not just spinning for wins and free spins. There are moments in this game where you’ll feel like you’re genuinely uncovering something as you go, especially when features kick in.
Book of Secrets Extra runs across five reels with 10 fixed paylines that pay from left to right. You score wins when matching symbols appear on adjacent reels from the leftmost position. The Book of Secrets symbol itself is the star of the show: it acts as both Wild and Scatter, substituting for other symbols to complete combinations, and triggering the free spins feature when three or more land in a spin.
When the bonus hits, you’re awarded a batch of free spins — typically 10 — and one regular symbol is chosen at random to become the special expanding symbol for the duration of the feature. Every time that symbol contributes to a win, it expands to cover the entire reel, giving you extra chances for big combinations. That’s the heart of what makes the bonus exciting here, because if those expanded reels line up in the right way, you’ll suddenly see those bigger wins stack up in a way that feels properly rewarding.
The game also includes a classic gamble feature after wins. After a successful spin you can opt to guess the colour of a covered card — get it right and your win doubles, guess wrong and you lose it. It’s old-school but adds a neat bit of tension if you like pushing your luck a little. There’s also a bonus buy option that lets you head straight into the free spins for a set cost instead of waiting for the scatters to do it organically — handy if you prefer jumping straight to the feature without the warm-up spins.
SYNOT Games have kept the design polished and the visuals thematic. Symbols are easy to read, animations are smooth, and everything scales nicely on both desktop and mobile so you don’t feel cut off from the action when you’re playing on the go. The soundtrack and background elements lean into the Egyptian motif without overwhelming your session, making it a game you can sit with for a few spins or a longer session depending on your mood.
Gameplay itself is friendly for newcomers but still gives experienced players enough to keep their attention. Base spins are straightforward, and the real excitement arrives when free spins, expanding symbols or gamble choices kick in. The gamble feature in particular gives you a choice each time you win — collect or risk it — and that’s the sort of little moment that breaks up what could otherwise be a long stretch of quiet spins.
Book of Secrets Extra takes a familiar favourite and adds enough spice to make it feel worth revisiting. The core mechanics are classic — free spins with an expanding symbol and a gamble option — but the way they’re packaged here makes the game feel lively rather than stale. If you enjoy feature-driven Egyptian slots with a bit of extra choice and a chance to push your luck, it’s worth spinning the reels at LuckyMate, and seeing if the Book opens its secrets wide for you.
✔ Classic expanding symbol free spins feature
✔ Gamble feature adds extra risk and reward
✔ Bonus buy lets you jump into the action
✖ Features can feel rare between bonus rounds
✖ Familiar mechanics for seasoned slot fans