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.
Has anyone ever won big on online slots? Yes, online slots have created quite a few millionaires over the years. Some games can have progressive jackpots worth millions of dollars and it only takes one lucky spin to win the entire amount.