Pennsylvania is the largest poker market in the USA at the moment with around 13 million people and the three biggest US online poker operators - PokerStars, BetMGM and WSOP - are all in the mix trying to outdo one another and serve up the absolute best experience to PA online poker players. While poker is a fairly simple game in its most basic form, serving up a superior online poker experience is a complex technical and design challenge that every online poker operator has to tackle head-on.