If you're trying to work out whether Book of Ishtar is worth your time, this hands-on review breaks it down. Holle Games are the team behind it, tuning the game for medium low volatility, with 95.43% RTP. Visually it's themed around book of, with the action running on 10 paylines across 5 reels. The maximum win sits at 5,000x, so there's serious upside on the table. Here's how it stacks up.
Written by Sophie Williams · Last updated: February 2026
This slot, Book of Ishtar, is the work of Holle Games, leaning into a book of aesthetic. It runs on a 5-reel grid running 10 paylines with medium low variance, and a return-to-player rate of 95.43%.
Where Book of Ishtar earns its keep is the feature set. 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. Overall it's a well-rounded slot that knows what it is.
At 95.43%, the RTP is slightly below the industry average of ~96%. While this is typical for many popular slots, players should be aware of the slightly lower theoretical return.
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 Ishtar 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 Ishtar by Holle Games is a solid offering that delivers good entertainment value. The 95.43% RTP combined with medium low volatility creates a well-balanced gaming experience.