Book of Sherlock has been catching plenty of attention, so we put it through its paces to see how it really holds up. This is a PopOK Gaming release, sitting firmly in the a medium high volatility profile bracket and paying back an RTP of 96.09%. You get 25 paylines across 5 reels, all leaning into a mystery aesthetic. Top wins are capped at 5,000x your stake, a healthy ceiling worth chasing. But is it actually worth playing? Read on.
Written by Sophie Williams · Last updated: March 2026
Book of Sherlock is a slot game from PopOK Gaming, dressed up with a mystery theme and powered by 5 reels and 25 paylines. The result is medium high volatility paired with a published RTP of 96.09%.
The mechanics are what make Book of Sherlock interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. The medium high volatility strikes a middle ground that should suit most playing styles. Overall it's a well-rounded slot game that knows what it is.
The RTP of 96.09% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
Medium-high volatility means wins come less frequently but tend to be larger when they hit. Players should be prepared for dry spells between bigger wins, requiring a moderate bankroll.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Book of Sherlock 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 Sherlock by PopOK Gaming is a solid offering that delivers good entertainment value. The 96.09% RTP combined with medium high volatility creates a well-balanced gaming experience.