joker king slotJoker King is a hhly volatile video slot, ranked as 5 out of 5 on Pragmatic Play’s own in-house volatility scale. This means you can expect few wins during the base-game - but larger wins when they do land. Volatility aside, Joker King also offers up a pretty decent RTP - and the default return to player percentage is 96.5%.Pragmatic Play's Joker King is a six reel, four row slot, with 25 win s. Gameplay is fast and exciting. The bonus opportunities add fun variation as well (see below). The Wild symbol substitutes for all symbols except the Scatter symbol. When it lands, another paying symbol is chosen at random to transform into a Wild as well.