Merlin's Spheres of Fortune has been catching plenty of attention, so we put it through its paces to see how it really holds up. Developed by Nucleus Gaming, Merlin's Spheres of Fortune arrives with a high-variance maths model and an RTP of 95.44%. It's given an engaging visual treatment and plays out on a 5-reel grid running 25 paylines. It first went live in 2024 and still earns its place today. If everything lines up, Merlin's Spheres of Fortune can pay up to 5,000x your bet. The full verdict is below.
Written by Emma Roberts · Last updated: January 2026
At its core, Merlin's Spheres of Fortune is a game produced by Nucleus Gaming. Presentation-wise it's finished with a clean, modern look, and it leans toward high variance at 95.44% RTP. Under the hood you'll find 25 paylines across 5 reels.
The mechanics are what make Merlin's Spheres of Fortune interesting. Look out for scatter symbols that unlock free spins and extra bonus rounds. The high volatility means patience is rewarded — expect quiet spells broken by bigger hits. All told, it's a solid entry in the Nucleus Gaming catalogue.
At 95.44%, 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.
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.
Merlin's Spheres of Fortune 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
Merlin's Spheres of Fortune by Nucleus Gaming is a solid offering that delivers good entertainment value. The 95.44% RTP combined with high volatility creates a well-balanced gaming experience.