4 of King Slot Demo — Free Play

4 of King is a not confirmed volatility slot from Endorphina. The RTP comes in at 0.96% and the top prize reaches undisclosedx your stake. On a 3-3-3-3-3 grid, 10 paylines, wins land N/A on average. It released in Wed Jan 01 2014 03:00:00 GMT-0500 (Eastern Standard Time). The free demo is live on this page — no account required.

RTP: 0.96%

The RTP for 4 of King is listed as unconfirmed in our data. If the provider or a licensed operator publishes this figure later, we'll add it here. In the meantime, the volatility and hit frequency data below give you the best available picture of how this game's maths actually play out in sessions.

Volatility: Not Confirmed

The Not Confirmed volatility on 4 of King is its most underrated quality. High-variance slots get the marketing — the giant multipliers, the life-changing ceilings — but medium-volatility games are where most players actually finish a session up. The math is set up to give you regular feedback, which means you're more likely to be near your original bet size when the feature eventually lands.

Hit Frequency: N/A

We don't have a confirmed hit frequency figure for 4 of King at time of publication. Given the not confirmed volatility classification, you can expect wins to land somewhere between 1 in 3 and 1 in 6 spins depending on how Endorphina calibrated the maths. We'll update this with a precise figure when it becomes available.

Stake Range: $0.01 to $100

The minimum stake on 4 of King drops below $0.10, which makes this accessible to players at nearly any bankroll level. At not confirmed volatility, the low floor matters — you can run 50–100 test spins at minimum stake without significant exposure. The undisclosedx ceiling scales with bet size, so higher-stakes play is available up to $100.00 for players who want more skin in the game.

Who Should Play 4 of King

Play this if: You want a game that won't drain your stack in twenty spins but still has real upside in the features. Not Confirmed volatility is the middle path — you get enough base game activity to stay engaged while retaining a undisclosedx ceiling that makes the bonus round worth chasing.

Skip this if: You need either very frequent wins to stay engaged or very high variance for the thrill. Not Confirmed volatility sits between both extremes by design — players who strongly prefer one end of the spectrum tend to find the middle unsatisfying. Know which type you are before loading this one up.

Verdict

4 of King is a balanced option from Endorphina: 0.96% RTP, not confirmed volatility, undisclosedx top prize. Nothing extreme in any direction. For players who want a game that works across different session lengths without demanding either a deep bankroll or a tolerance for pure variance, the profile fits. The demo is the fastest way to verify the feel matches the specs.