King of Cards

King of Cards is a Greentube slot built around win-doubling wild joker. The features it carries are win-doubling wild joker, free games with multiplier, scatter, gamble / risk feature.

What that means in practice is worth reading off the paytable before you stake. The bonus round is where most of a modern slot's payout sits, so knowing what triggers it — and how often — tells you more about a session than the headline numbers do.

Greentube rates this 5 of 5 (high). This is at the top of the volatility scale. Base play is quiet by design and the payout is concentrated in the feature, so a balance that only covers a few dozen spins may never reach it. Size your stake for the wait, not for the win.

Very high volatility means long quiet stretches broken by rare large hits. It does not mean the game pays more overall — it means the same return arrives in a different shape, and it needs a bigger balance relative to your stake to survive the gaps. See how volatility shapes a session for the fuller explanation.

The published figure is 95%. Novomatic publishes no RTP itself; slotcatalog lists 95% and flags RTP ranges - treat as approximate.

That matters more than it sounds. Many slots ship in several RTP configurations and the operator chooses which to run, so a number quoted on a review site may not describe the build you are playing. Check the game's own info panel, which reflects what is actually deployed.

Staked and settled in rand at a licensed South African operator. See the full Greentube catalogue, browse slots by studio, or start from the slots overview.

If you are clearing a bonus, check the eligible-game list and the maximum stake allowed while wagering first — breaching that cap can void the winnings. See how wagering works.