Curious what 4 Of A King actually feels like to play? Here's our full, no-fluff take. This is a Endorphina slot game, sitting firmly in the a very high-variance maths model bracket and paying back a published RTP of 96.04%. Wins land at roughly a 30% hit rate, shaping how the sessions feel. If everything lines up, 4 Of A King can pay up to 100,000x your bet. You get a 5-reel grid running 25 paylines, all built with crisp artwork and atmosphere. The full verdict is below.
Written by Daniel Chen · Last updated: February 2026
At its core, 4 Of A King is a slot game produced by Endorphina. Presentation-wise it's built with crisp artwork and atmosphere, and it leans toward a very high volatility profile at 96.04% RTP. Under the hood you'll find 25 paylines across 5 reels.
The mechanics are what make 4 Of A King interesting. 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. Overall it's a well-rounded slot game that knows what it is.
The RTP of 96.04% is right around the industry average of ~96%. This represents a fair return that's in line with what most modern slots offer.
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.
4 Of A King 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
4 Of A King by Endorphina is a solid offering that delivers good entertainment value. The 96.04% RTP combined with very high volatility creates a well-balanced gaming experience.