1. Mega Joker  99% RTP. Mega Joker from NetEnt has been around for more than a decade. Though it's a relatively simple game with just three reels and three rows, Mega Joker is a famous and beloved high-volatility slot thanks largely to its eye-popping 99% RTP, bonus Supermeter game, and progressive jackpot.

When playing blackjack, you want to beat the dealer's hand. The dealer is the only person you need to beat, so while other bettors can join you, they are all competing to beat him or her. Blackjack has the best odds of winning in any game, with a 49% chance of winning.