£millions up for grabs with thes top progressive slot games

For many players, a progressive jackpot is the ultimate goal: the best prize online slots and casinos have to offer. This April, there are plenty of slot games offering you the chance to become a millionaire, with more than £15 million available!

Updated: 26 January 2024 By Becky Mosley

For many players, a progressive jackpot is the ultimate goal: the best prize online slots and casinos have to offer. This April, there are plenty of slot games offering you the chance to become a millionaire, with more than £15 million available!

The Dark Knight

Microgaming’s The Dark Knight, based on Christopher Nolan’s fantastic Dark Knight trilogy, has 5 reels, 243 paylines and costs as little as 30p per spin. The base game features 5x multipliers, wild symbols, free spins, 4 wild reels and the chance to win cash prizes. There’s also a Free Spins feature worth up to 15 free spins and a 2x multiplier. The Dark Knight slot game has 4 progressive jackpots as well as a Mega Progressive Jackpot, which is currently worth over £10 million.

Gladiator

Playtech’s extremely popular 5 reel Gladiator slot has 25 ways to win, costs just 25p and features several clips from the successful Gladiator movie. There’s also Coliseum Bonus function during which you’ll be faced with a 20-square wall and you must pick squares to win free spins, extra scatter symbols, multipliers and extra wilds. Meanwhile, the Gladiator Jackpot Bonus requires you to find 9 golden helmets and could result in a jackpot win over £1.5 million.

Isle O’ Plenty

IGT’s 5 reel slot is a little different as it’s based in Ireland and on Irish luck instead of on a movie. MegaJackpots Isle O’ Plenty has 40 paylines, costs 60p and features a Wild Rush function that increases your chance of winning more wilds. There’s also a Free Spins Bonus where you start with 24 free spins. During a Wild Rush, up to 4 wilds are placed in the top row and over 240 free spins are on offer. The Jackpot now totals more than £1.2 million and can be triggered in multiple different ways.isle o plenty

Hall of Gods

NetEnt’s Hall of Gods has a theme based entirely on Norse mythology and costs 20p a spin. With 5 reels and 20 paylines, the base game has an Expanding Wild function featuring the Midgard Serpent who expands the 3 reels in the centre. This is accompanied by a Free Spins round where 20 free spins are available and subject to a 30x multiplier. The best feature though is Pick Win, where Thor’s hammer can be used to shatter shields. Like MegaJackpots Isle O’ Plenty, the Mega Jackpot on Hall of Gods is a over £1.2 million.

Megafortune

Last but certainly not least, NetEnt’s Mega Fortune – which also has 5 reels, 25 paylines and costs 25p – is a luxurious slot having paid out more than any of its competitors. There are Free Spins bonuses and 5x multipliers, but the Mega Fortune Bonus is by far its most popular aspect. You’ll see a gigantic wheel where you’re aiming the reach the inner wheels, and if you get to the inner most wheel you’ll win £1.2 million!mega fortune

Becky Mosley
Editor-in-Chief at Compare Casino Sites

Rebecca (Becky) Mosley has been at the heart of the UK online gambling industry since 2008 — making her one of the most experienced voices in casino comparison. She is editor-in-chief at Compare Casino Sites and personally oversees every casino review published here.

Becky brings a genuine player-first perspective to everything on CCS. Her approach has always been the same: transparency, fair bonus terms, and responsible gambling above all else. She insists on the same standards from every operator listed on the site — if a casino's terms can't stand up to plain-English scrutiny, it doesn't earn a recommendation.

Over 17 years in the industry, Becky has built deep expertise across UK Gambling Commission licensing, slot game mechanics, bonus structures, and the constantly evolving regulatory landscape. She works directly with operators and software providers to keep every listing accurate, and reviews each casino's wagering requirements, withdrawal limits, and customer support before a single rating goes live.

Becky is a Companies House registered director.