Welcome to our deep dive on Cobra Hearts — the demo, the maths, and whether it earns a spot in your rotation. Konami are the provider behind it, tuning the slot for high variance, with 95.1% RTP. It's given an engaging visual treatment and plays out on a 5-reel grid running 30 paylines. If everything lines up, Cobra Hearts can pay up to 250,000x your bet. Wins land at roughly a 30% hit rate, shaping how the sessions feel. So does it deliver? Let's get into it.
Written by Emma Roberts · Last updated: March 2026
Cobra Hearts comes to us from Konami, given an engaging visual treatment and powered by 5 reels and 30 paylines. The result is a high-variance maths model paired with a return-to-player rate of 95.1%.
Dig into the bonuses and Cobra Hearts 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. Overall it's a well-rounded title that knows what it is.
At 95.1%, 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.
Cobra Hearts 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
Cobra Hearts by Konami is a solid offering that delivers good entertainment value. The 95.1% RTP combined with high volatility creates a well-balanced gaming experience.