If you're trying to work out whether Book of Secrets Extra is worth your time, this hands-on review breaks it down. This is a SYNOT Games slot, sitting firmly in the medium low variance bracket and paying back an RTP of 96%. You get a 5-reel grid running 20 paylines, all built around a book of and egyptian theme. Top wins are capped at 5,000x your stake, a healthy ceiling worth chasing. Originally released in 2022, it has aged well. But is it actually worth playing? Read on.
Written by Michael Torres · Last updated: March 2026
At its core, Book of Secrets Extra is a slot game produced by SYNOT Games, dressed up with a book of and egyptian theme. It runs on 5 reels and 20 paylines with a medium low-variance maths model, and an RTP of 96%.
Dig into the bonuses and Book of Secrets Extra starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium low volatility makes it forgiving on the bankroll, ideal for relaxed, longer sessions. On balance, Book of Secrets Extra is a dependable option worth a few spins in the demo first.
The RTP of 96% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
Medium-low volatility offers a good balance of regular wins with occasional larger payouts. Expect frequent hits with modest amounts, suitable for casual players who want low-risk entertainment.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Book of Secrets Extra features scatter symbols that can trigger free spins rounds. Landing the required number of scatter symbols anywhere on the reels activates the free spins feature, giving you extra chances to win without additional bets. During free spins, special modifiers may apply to boost your winning potential.
3.0 / 5 — Good
Book of Secrets Extra by SYNOT Games is a solid offering that delivers good entertainment value. The 96% RTP combined with medium low volatility creates a well-balanced gaming experience.