The game, which in itself is a masterpiece, was inspired by the popular superhero film from 2008. Playtech’s The Incredible Hulk is part of the developer’s Marvel Mystery Jackpot series, where several Marvel-branded titles contribute to the accumulation of the jackpot pools. However, what all players are hoping for is to collect one of the four progressive jackpots. The African-themed variation of the slot enjoys the greatest popularity among players. There are several variations of the game that contribute to the accumulation of the pools, as the titles are all linked to Microgaming’s progressive jackpot network.

It offers the widest overall library of casino games among our recommendations, with over 4,000 titles including 60+ premium progressive jackpot slots, the exclusive LeoJackpot network and popular title Jackpot Jester 50000. In terms of jackpot games, it is also the best option of all the Wish Upon a Jackpot online casinos, with this well-known game offering jackpots in the millions. Fixed-jackpot games offer a set prize amount that doesn't grow, which is paid out for a specific symbol combination on a single game. Many casinos will run jackpot games across their libraries, and UK players – whether complete beginners to experienced players hunting a specific game – will want to understand how casino jackpots work and where to find them. The progressive jackpot is awarded to the player who manages to land four symbols with the Mega Jackpots logo on the third reel in the base game or during a round of free spins.

Apart from the fun animations and visuals, the game offers two progressive jackpots – the Holy Grail and the Slightly Less Holy Grail prizes. These include the original Mega Moolah, Mega Moolah Isis, Mega Moolah 5-Reel Drive and Mega Moolah Summertime. The slot carries mind-blowing winning potential and has rewarded slot fans with tens of millions in winnings many times. The progressive prizes on these games are known to reach mammoth heights, so make sure you check them out. As the number of progressive slot titles is indeed imposing, we have sifted out twenty of the most popular progressive slots to look for at renowned online UK casinos.

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This vibrant and colourful slot was inspired by the iconic Egyptian queen and has become an all-time classic. Cleopatra is among the most sought-after titles in the portfolio of software developer IGT, as it provides players with the opportunity to potentially walk away with a life-changing progressive jackpot. The progressive Mega Glam Life is courtesy of English software developer Betsoft and features a Highlanderwin Casino total of 20 adjustable paylines across five reels. In order to collect one of those, players are expected to activate the bonus game by lining up three hammer symbols on the reels. Hall of Gods is in high demand among players as it offers three different progressive prizes, namely the Mini, Midi and Mega jackpots. These include Idun, Thor, Odin, Freya and Loki, who are the highest-paying symbols in the game.