Five UK Casino Game Libraries: Compared in May 2025
Quality casino gaming starts with a diverse and well-curated game library. This month, I looked into the game selections at five top UK online casinos to see which ones offer the best variety, quality, and unique features for British players.
The external experts of Online-Casinos.com take a look back at already reviewed casinos
Key Points:
- Grand Ivy Casino boasts the largest library.
- Karamba Casino offers the smallest selection.
- Duelz Casino features around 2,000 games.
- Casimba Casino provides an extensive catalogue of 3,000+ titles.
- Griffon Casino, while newer, shines with a quality live dealer section.
Online casino game libraries can vary wildly in size and scope. In this comparison, I review the game collections of Duelz, Grand Ivy, Casimba, Karamba, and Griffon Casino. All five hold trusted licenses and offer the staple categories, such as slots and table games, yet each has its own unique strengths. You’ll find everything, from thousands of slot machines at one casino to dozens of scratch cards at another.
Duelz Casino: Battle-Ready Game Library
Duelz Casino makes an immediate impression with its gamified theme. The overall vibe is lighthearted and competitive. Despite the quirky concept, Duelz Casino is fully licensed by the UKGC and offers a safe and fair gaming environment.
When it comes to the game library, Duelz offers over 2,000 diverse titles, covering all the main categories a player would expect. There’s an emphasis on slots, which make up the bulk of the collection, from classic fruit machines to the latest video slots. In fact, Duelz features popular hits like Book of Dead and Starburst, alongside a fair number of exclusive Duelz games available nowhere else.
Traditional table games are present but somewhat limited in RNG (Random Number Generator) formats; the casino compensates by directing players to its robust live dealer section for variety. Notably, Duelz has no video poker or speciality poker games in its regular lineup, so poker fans might be left disappointed.
Duelz’s partnership with top-tier software providers guarantees quality and diversity in its slots roster. It is considered a safe NetEnt casino, hosting many of NetEnt’s beloved titles with superb graphics. Games from Play’n GO, Red Tiger Gaming, Yggdrasil, and other renowned studios further enrich the library. This means players can enjoy everything from Red Tiger’s daily jackpots to Play’n GO’s inventive themes under one roof.
Grand Ivy Casino: An Unrivaled Game Collection
The game library at Grand Ivy is nothing short of colossal. Players have over 3,500 games to choose from, making it one of the largest collections in the UK market. This site is truly a one-stop shop, with games covering every genre. The selection skews heavily toward online slots, with over 3,100 slots on offer, ranging from classic 3-reel slots to modern video slots with advanced features.
You’ll find fan favourites, like Rich Wilde and the Tome of Dead, alongside hundreds of other slot titles. Despite slots taking up roughly three-quarters of the catalogue, Grand Ivy ensures plenty of variety beyond slots. There are dozens of roulette and blackjack variants, a handful of video poker titles, plus around 76 other table games and arcade games. This includes casino staples, like baccarat, craps and scratch cards, as well as fun, casual games.
Such a vast library is made possible by partnerships with a staggering array of software providers. Grand Ivy Casino works with 100+ game developers, meaning you’ll see games from almost every major studio in the industry. From blockbuster NetEnt releases to niche gems by studios like Thunderkick and ELK Studios, the breadth of content is remarkable.
For live dealer games, Grand Ivy taps the best in the business: Pragmatic Live and On Air provide a full live casino suite. There are 62 live tables available, covering multiple versions of blackjack, roulette, baccarat, and innovative game shows. One minor drawback noted is that there is no free-play mode once logged in. However, given the content on offer, that’s a small trade-off for real-money players.
Casimba Casino: High-Payout Game Variety
Looking at Casimba’s game library, the numbers speak for themselves. There are approximately 3,500 casino games available, putting Casimba in the upper echelon for game quantity. Like its sister site, Grand Ivy Casino, Casimba’s collection is dominated by slots. Over 3,160 slot games are listed, including blockbuster titles and new releases.
Slot enthusiasts will recognise big-name games such as Big Bass Bonanza, which is one of Casimba’s most-played titles. The sheer variety of slots is impressive, from simple classic fruit slots to feature-rich Megaways and branded games. Beyond slots, Casimba offers all the standard categories: there are over 20 different roulette and blackjack games, a selection of more than 60 other table games, and around two video poker titles.
Casimba’s strength lies in the quality of its game providers. By featuring games from over 102 software developers, Casimba ensures players get the top hits from industry-leading studios. You’ll encounter titles from NetEnt, Big Time Gaming, Play’n GO, Quickspin, and more – all under one virtual roof. In fact, NetEnt is highlighted as a primary provider here.
A major advantage of Casimba’s library is its high average RTP of 96.5%, which is one of the highest average payout rates among these five casinos.
Karamba Casino: Scratch Card Specialists
Karamba Casino is a name that many long-time online gamblers will recognise. In terms of game library size, this operator offers a more modest selection compared to giants like Grand Ivy or Casimba. There are roughly around 1,000 games available in total. This number has grown over time, but it’s still on the smaller side. What Karamba lacks in sheer quantity, it makes up for in focus. This site is arguably the top online casino for scratch cards.
Karamba features around 450 slot games, including popular choices like Starburst, Gonzo’s Quest, and Book of the Dead. The slot selection covers the hits from big providers, though it’s naturally smaller than those in our other comparisons.
As for table games, the operator has a handful of RNG and live dealer table options. For example, you can play a few versions of blackjack, around 10 types of roulette, and a couple of casino poker games. The live dealer section is powered mainly by Pragmatic Live, with dozens of options, including game shows, available.
Karamba’s game providers include several of the industry’s big names, which ensures the quality remains high. The library is powered by developers such as NetEnt, BTG, Play’n GO, and Pragmatic Play, among others.
Griffon Casino: Modern Mobile-First Library
Griffon Casino is the newest contender among these five, having launched in 2020, and is a sister site to Karamba. In contrast to Karamba’s playful style, Griffon Casino has a more adventurous and sleek theme.
The game library at Griffon covers all the essentials, with around 1,500+ titles in total. This is a healthy medium size — much larger than Karamba’s selection, though not as gigantic as Casimba’s. Griffon’s catalogue leans most heavily on slot games, boasting roughly 600+ slots. All the popular genres are present: you can spin through high-volatility adventures, classic fruit slots, Megaways games, and jackpot slots.
Fans of table games will find the basics: a few roulette and blackjack variants are available as computer-generated random number games. However, the selection of automated table games is minimal. This seeming gap is filled by the live casino section. You can choose from dozens of live tables streaming high-definition games at any time.
Pragmatic Live powers the live casino, so expect top-notch options like Mega Roulette, Bet Behind Pro Blackjack, and various poker and gameshow tables. For a casino of its size, Griffon offers an exceptional live casino experience. It effectively positions itself among the best live casino sites through this quality.
In terms of providers, Griffon Casino works with a robust lineup of software developers, ensuring a diverse mix of games. You’ll find slots from big names like Play’n GO, Microgaming, Quickspin, Blueprint Gaming, Pragmatic Play, IGT, Playson, and Red Tiger Gaming. This means the likes of Play’n GO’s Rich Wilde series or Pragmatic’s John Hunter slots are on the menu, alongside classic Microgaming progressive slots and Red Tiger’s daily drop jackpots.
