Kupala II has been catching plenty of attention, so we put it through its paces to see how it really holds up. This is a Spinomenal slot, sitting firmly in the very high volatility bracket and paying back an RTP of 95.95%. It first went live in 2022 and still earns its place today. Top wins are capped at 600,000x your stake, a genuinely massive ceiling for the patient. You get 6 reels and a familiar payline structure, all built with crisp artwork and atmosphere. The full verdict is below.
Written by Sophie Williams · Last updated: February 2026
This game, Kupala II, is the work of Spinomenal. Presentation-wise it's built with crisp artwork and atmosphere, and it leans toward a very high-variance maths model at a return-to-player rate of 95.95%. Under the hood you'll find a straightforward 6 reels layout.
Where Kupala II earns its keep is the feature set. Look out for scatter symbols that unlock free spins and extra bonus rounds. With very 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 Spinomenal catalogue.
At 95.95%, 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.
Very high volatility delivers the most extreme payout profile — long dry spells punctuated by potentially massive wins. Only recommended for experienced players with substantial bankrolls and high risk tolerance.
About 1 in 3 spins results in a win. This is a moderate hit frequency that balances win frequency with payout size.
Kupala II 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
Kupala II by Spinomenal is a solid offering that delivers good entertainment value. The 95.95% RTP combined with very high volatility creates a well-balanced gaming experience.