Which Online Slots are Dominating the Massive UK Market in 2025?
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By PAGE Editor
While there are many tremendous and truly innovative approaches being taken across the iGaming space, one type of game continues to rule supreme. This is best shown in the very well-established market of the UK.
Overall, iGaming generates £4.4 billion of the £6.9 billion in gross gambling yield each year. However, the latest figures presented by the gambling authority also reveal that £3.6 billion of this is solely from online slot games. That’s over half of the total and a strong majority of just casino gaming.
With so much interest, the online slot market has become an important indicator of the best slots around.
Casting a Line Remains Wildly Popular
Generally speaking, slot players in the UK won’t stick with games that aren’t offering much for very long. So, they gravitate to proven games and ones that have been popularised through word of mouth. As a result, the slots that tend to dominate in the UK should be the ones that other regions check out. In the UK, to this point in 2025, two games from the same series and same developers reign supreme.
Created by Reel Kingdom, the classic Big Bass Bonanza from 2020 and its 2022 sequel are the biggest fish in this pond. The original sits in second, having won over a huge fan base for its core fishing feature. Here, taking the form of a free spins setup, players see loads of fish symbols spin on the reels and land with cash values. When they also land a fisherman wild at the same time, the player nets all of those cash values and can even level up the feature.
The sequel amps up this feature just a little bit further. The Big Bass game was making the reel scream with its rampant popularity, so Reel Kingdom was keen to meet the demand. One of many spinoffs was Big Bass Splash. It comes with a nudge feature to try to get the third scatter needed to get to the free spins. From there, in the free spins mode, up to five modifiers can be applied to make it even more bombastic than the original’s bonus.
Ancient Egypt Hot on the Heels of the Anglers
Following a double-decker of fishing slots, the next top spots to round out a very clear top four for slots in the UK are both of the same theme, too. Next up is a legendary ancient Egyptian slot game, followed by a newcomer that’s rapidly gained traction with seasoned slot spinners. Mummy’s Jewels has left long-time favourites like Fishin’ Frenzy: The Big Catch and Gold Blitz in its wake.
Found among the collection of brand new slots and games online, alongside some other games of the same theme, like Scarab Fortunes Power Combo, Mummy’s Jewels has a lot going for it. It’s back to the classic 5x3 layout for the Pragmatic Play slot. Within these, players can unlock five fixed jackpots, trigger a cash collect feature, and even spin a huge prize wheel filled with payouts and features.
Just ahead of Mummy’s Jewels, and understandably given its reputation, is Rich Wilde and the Book of Dead. The Play’n GO slot released in 2016 remains a perpetual favourite. It spawned so many ‘Book Of’ copycats that mimic its pioneering core feature. That feature is to have ten free spins, during which one selected symbol will expand whenever it lands. It’s clear-cut and very potent.
In 2025, the big winners of the UK’s avid slot market are Big Bass Splash, Big Bass Bonanza, Book of Dead, and the debutant Mummy’s Jewels, and it's indicative of a wider growth in the popularity of slots within the UK's online gaming industry that's showing no sign of slowing down.
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