King of Fishing has been catching plenty of attention, so we put it through its paces to see how it really holds up. Built by Formula Spin, it lands as a slot game with a high-variance maths model and an RTP of 96.3%. Visually it's dressed up with a fish and aquatic theme, with the action running on a 5-reel grid running 30 paylines. Top wins are capped at 5,000x your stake, a healthy ceiling worth chasing. The full verdict is below.
Written by James Holloway · Last updated: March 2026
This release, King of Fishing, is the work of Formula Spin, dressed up with a fish and aquatic theme. It runs on a 5-reel grid running 30 paylines with high variance, and a return-to-player rate of 96.3%.
The mechanics are what make King of Fishing interesting. 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. On balance, King of Fishing is a dependable option worth a few spins in the demo first.
The RTP of 96.3% 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.
King of Fishing 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.
3.1 / 5 — Good
King of Fishing by Formula Spin is a solid offering that delivers good entertainment value. The 96.3% RTP combined with high volatility creates a well-balanced gaming experience.