If you're trying to work out whether Book Of Santa is worth your time, this hands-on review breaks it down. Endorphina are the studio behind it, tuning the slot game for high variance, with an RTP of 96.04%. It's themed around christmas and plays out on a 5-reel grid running 20 paylines. Top wins are capped at 500,000x your stake, a genuinely massive ceiling for the patient. It first went live in 2018 and still earns its place today. Here's how it stacks up.
Written by Sarah Mitchell · Last updated: March 2026
At its core, Book Of Santa is a game produced by Endorphina, dressed up with a christmas theme and powered by 20 paylines across 5 reels. The result is a high volatility profile paired with a return-to-player rate of 96.04%.
Dig into the bonuses and Book Of Santa starts to stand out. Look out for scatter symbols that unlock free spins and extra bonus rounds. With high variance, this one is aimed at players who can ride out the swings for the top wins. All told, it's a solid entry in the Endorphina catalogue.
The RTP of 96.04% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
High volatility means longer gaps between wins, but when wins do land, they can be significantly larger. A bigger bankroll and patience are recommended for this type of slot.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Book Of Santa 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 Santa by Endorphina is a solid offering that delivers good entertainment value. The 96.04% RTP combined with high volatility creates a well-balanced gaming experience.