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%.Joker king by Pragmatic Play is a prime example of a slot that refines old mechanics instead of trying to stuff everything into one product.