Original: Poker games differ in how the cards are dealt , how hands may be formed , whether the high or low hand wins the pot in a showdown ( in some games , the pot is split between the high and low hands ) , limits on bets and how many rounds of betting are allowed .
Simplified: Poker 's popularity has experienced an unprecedented spike in recent years , largely due to the introduction of online poker and the invention of the hole-card camera which finally turned the game into a spectator sport .