Welcome to our deep dive on Holmes vs Moriarty — the demo, the maths, and whether it earns a spot in your rotation. This is a ThunderSpin game, sitting firmly in the a low volatility profile bracket and paying back a return-to-player rate of 96%. You get 5 reels and 10 paylines, all wrapped in a mystery theme. Top wins are capped at 1,500x your stake, a respectable ceiling for the format. The full verdict is below.
Written by Daniel Chen · Last updated: February 2026
Holmes vs Moriarty is a game from ThunderSpin. Presentation-wise it's wrapped in a mystery theme, and it leans toward low volatility at a return-to-player rate of 96%. Under the hood you'll find a 5-reel grid running 10 paylines.
The mechanics are what make Holmes vs Moriarty interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. Thanks to its low variance, wins come often enough to suit casual, lower-risk play. On balance, Holmes vs Moriarty 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.
Low volatility means frequent small wins with less risk. This slot is ideal for players who prefer steady, consistent payouts and longer play sessions without dramatic bankroll swings.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Holmes vs Moriarty 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
Holmes vs Moriarty by ThunderSpin is a solid offering that delivers good entertainment value. The 96% RTP combined with low volatility creates a well-balanced gaming experience.