Casumo is one of the best new slot sites in the UK, and we have picked out Big Bass Bonanza, Big Bass Splash, Sugar Rush, Gates of Olympus, Sweet Bonanza, Book of Dead, Starburst and Gonzo’s Quest as the best slots on Casumo.
With so many games to choose from, new players may want to know which Casumo casino slots are worth their stake and their patience, and what the bonus spins are actually restricted to.
To that end, we have picked eight slots that UK players search for from the operator’s own most-popular list and curated shelves, and we have recommended them based on criteria including volatility, maximum wins and bonus features, as well as RTP (with the list ordered from highest RTP to lowest).
Below, readers can find further information on our Casumo slots recommendations – many of which are among the most popular slots in the UK.
Slot | Provider | Provider RTP | Max win |
|---|---|---|---|
Big Bass Bonanza | Pragmatic Play | 96.71% | 2,100x stake |
Big Bass Splash | Pragmatic Play | 96.71% | 5,000x stake |
Sugar Rush | Pragmatic Play | 96.5% | 5,000x stake |
Gates of Olympus | Pragmatic Play | 96.5% | 5,000x stake |
Sweet Bonanza | Pragmatic Play | 96.48% | 21,100x |
Book of Dead | Play'n GO | 96.21% | 5,000x stake |
Starburst | NetEnt | 96.09% | 500x stake |
Gonzo’s Quest | NetEnt | 95.97% | 37,500x stake |
Where to begin with Casumo slots
Big Bass Bonanza is the game the bonus spins are tied to, so that makes sense for anyone claiming the Casumo welcome offer.
Gates of Olympus is best for a volatile session, while Starburst suits beginners and users looking for an extended session.
In terms of where to look for Casumo slots in the lobby, the curated rows are easier to read than a full scroll, so Games of the Week and Drops and Wins are the shelves worth opening first.
Remember that you can use the list below for the numbers, and go to the tournaments section for the competitive angle.
Best Casumo slots to play
In this section, we break down our recommendations for Casumo best slots, with information including RTP, volatility and max win.
The eight picks run from the highest published RTP on this list down to the lowest.
1. Big Bass Bonanza
Provider: Pragmatic Play
Game detail | Figure |
|---|---|
Reels | 5 |
Paylines (ways to win) | Up to 15,625 |
Provider RTP | 96.71% |
Volatility | High |
Max win | 2,100x stake |
In-game features | Bonus Games, Free Spins, Multipliers, Wilds |
Big Bass Bonanza is one of the leading titles from the Big Bass series, produced by well-known studio Pragmatic Play.
Readers can play hundreds of Pragmatic Play slots at UK casinos, though Casumo uses Big Bass Bonanza as the applicable game for using the free spins from its welcome offer.
This fishing-themed game operates over five reels and offers users up to 15,625 paylines, with a fisherman wild that collects money symbols.
It also carries an RTP of 96.71% – the joint-highest on our list – and is a high volatility slot with a max win of 2,100x stake.
Overall, this game is the perfect option among the best slots on Casumo for anyone claiming the welcome offer, as well as fans of the popular series and those looking for an introduction to high volatility, high RTP slots on Casumo.
2. Big Bass Splash
Provider: Pragmatic Play
Game detail | Figure |
|---|---|
Reels | 5 |
Paylines (ways to win) | 10 |
Provider RTP | 96.71% |
Volatility | High |
Max win | 5,000x stake |
In-game features | Bonus Games, Free Spins, Multipliers, Wilds |
Big Bass Splash is another popular title from Pragmatic Play. It also runs over five reels, with 10 paylines and a fisherman wild that collects money symbols.
The volatility and RTP are the same as Bonanza at 96.71%, though the max win of 5,000x stake is larger.
The game also has a free spins mode, where a random modifier comes into play once triggered.
This can land instant wins or further free spins, with bonus games and multipliers also featuring.
Big Bass Splash is a good pick for fans of the series who want a higher maximum win chance, as well as differing mechanics with a familiar setting.
3. Sugar Rush
Provider: Pragmatic Play
Game detail | Figure |
|---|---|
Reels | 7 |
Paylines (ways to win) | 20 |
Provider RTP | 96.5% |
Volatility | High |
Max win | 5,000x stake |
In-game features | Cascading Reels, Free Spins, Multipliers |
Sugar Rush is another game produced by Pragmatic Play, though this uses a grid feature rather than a payline one, with seven reels and 20 paylines (none of which are fixed).
A cluster-pays grid rather than paylines, and there’s a free spins round where multipliers build.
The volatility of this game is high, with an RTP of 96.5% and a max win of 5,000x stake. It is one of the games Casumo’s Drops and Wins prize drops run on too.
As such, it is a good choice among the best slots on Casumo for Drops and Wins fans, as well as those who want to try a Pragmatic Play game with a different mechanic.
4. Gates of Olympus
Provider: Pragmatic Play
Game detail | Figure |
|---|---|
Reels | 6 |
Paylines (ways to win) | N/A |
Provider RTP | 96.5% |
Volatility | High |
Max win | 5,000x stake |
In-game features | Free Spins, Multipliers |
Gates of Olympus is another popular Pragmatic Play title, which carries a Greek gods theme and operates a scatter mechanic where a scatter multiplies the win it lands with.
It is a high-volatility pick at 96.5% RTP, with a max win of 5,000x stake, though the swings are wide enough that a small stake is the sensible way in.
Overall, it’s a good choice for players who prefer a totally different mechanic and theme while still playing a Pragmatic Play slot with high volatility and good RTP.
5. Sweet Bonanza
Provider: Pragmatic Play
Game detail | Figure |
|---|---|
Reels | 5 |
Paylines (ways to win) | N/A |
Provider RTP | 96.48% |
Volatility | Medium |
Max win | 21,000x stake |
In-game features | Cascading Reels, Free Spins, Multipliers |
Sweet Bonanza is the final Pragmatic Play title on our list, and it appears in Casumo’s Drops and Wins section.
The game does not use traditional paylines, instead operating a Win all Ways mechanic, where eight or more matching symbols land a win.
It uses a tumble feature – where winning symbols are replaced – and a fruit-and-candy theme.
This is a medium volatility game with an RTP of 96.48%, with a maximum win of around 21,000x stake. As such, it suits players chasing larger potential wins, as well as those who want to explore different mechanics among Pragmatic Play games.
6. Book of Dead
Provider: Play'n GO
Game detail | Figure |
|---|---|
Reels | 5 |
Paylines (ways to win) | 10 |
Provider RTP | 96.21% |
Volatility | High |
Max win | 5,000x stake |
In-game features | Free Spins, Wilds |
Book of Dead is a popular Play’n GO title with a Rich Wilde adventurer and Ancient Egypt theme, with an expanding symbol feature in the free spins.
This is the final high volatility slot on our list, with an RTP of 96.21% and a max win of 5,000x stake.
It is one of several titles in the series, and is available on hundreds of UK casinos, so readers can compare Play'n GO casinos before playing, if you’re as yet undecided about Casumo.
In terms of who the game suits, it’s among the best slots on Casumo for fans of Play’n GO games, as well as those who like the Rich Wilde series and more simple, classic high volatility titles.
7. Starburst
Provider: NetEnt
Game detail | Figure |
|---|---|
Reels | 5 |
Provider RTP | 96.09% |
Volatility | Low |
Max win | 500x stake |
In-game features | Free Spins, Jackpot, Wilds |
Starburst is one of the flagship titles from popular studio NetEnt, and it is the steadiest game on this list, with an RTP of 96.09%.
It is a low volatility title that uses a cosmic, futuristic theme, with expanding wilds that trigger a re-spin.
The maximum win is 500x the stake, which is the lowest on this list, though this is the trade-off for a less volatile session, and overall the game suits those who are novices, or seasoned players who prefer a longer session.
8. Gonzo's Quest
Provider: NetEnt
Game detail | Figure |
|---|---|
Reels | 5 |
Paylines (ways to win) | 20 |
Provider RTP | 95.97% |
Volatility | Medium |
Max win | 37,500x stake |
In-game features | Cascading Reels, Free Spins, Multipliers, Wilds |
Gonzo's Quest is another NetEnt title, and it is the oldest game on this list as a classic slot with a Conquistador theme.
It uses five reels and 20 paylines, with an avalanche mechanic with a rising multiplier (as well as cascading reels and multipliers).
This game has the biggest published win multiple here at 37,500x stake, though it is a medium volatility title with an RTP of 95.97%, the lowest on this list.
The published maximum is far abovea the other games, so it should be read as the ceiling of a long run rather than a target.
To that end, Gonzo’s Quest suits players who prefer moderate volatility and the chance for bigger wins, as well as fans of classic NetEnt titles.
Where the Casumo bonus spins can be used
Anyone claiming the Casumo promo code offer will want to use their free spins, but they can only be used on Big Bass Bonanza.
A spin offer that only works on one title is worth less to those uninterested in the game, while offers that spread the spins across a set of games provide more flexibility for new users. Pick the offer that suits you, rather than the one that is bigger.
Winnings still carry terms, so check the wagering requirements, the maximum win and the expiry before depositing.
Readers should work out the games they would actually play first, then check whether the offer covers them.
You can check out the Bet365 slots list with our guide if you want a taste of other offerings.
Remember that all casino welcome offers are for over-18s in the UK only - you can read more about how casino bonus terms work with our guide.
Games of the Week, Drops and Wins and New and Exclusives
The Casumo online slots lobby is arranged in edited shelves, so the fastest way for a reader to find something new is to open Games of the Week first.
The Drops and Wins shelf consists of selected games that take part in a monthly prize drop, which is why the games inside it change.
The New and Exclusives row holds recent releases and the operator's own titles, and games move out of it after a few weeks.
Readers can use the search box to browse Casumo slots once they know what they want, and the shelves when they do not.
The minimum stake is shown on each tile in the lobby, so a reader on a small budget can check that before opening a game too.
High volatility Casumo slots for a bigger swing
The high-volatility games on this list pay less often and can go a long way without a win, which is why the maximum figures are large.
Gates of Olympus, Sweet Bonanza and the two Big Bass games are at the more volatile end of this list, while Starburst is at the calm end of it.
Note that a high published RTP does not make a volatile game gentle, because volatility decides how the wins arrive and not how much is returned over time.
In terms of what RTP tells you about a slot, it refers to the percentage of money returned over millions of spins.
Anyone chasing a big multiple should set a smaller stake and a fixed budget, because the same maths that allows a big win also allows a long losing run when playing the best Casumo slots games.
Finally, remember again that a maximum win figure is a ceiling over millions of spins and not a target for one session.
NetEnt and Play'n GO slots in the Casumo lobby
NetEnt and Play’n GO dominate the classic end of the Casumo lobby, and between them they cover the Egypt, adventure and space themes most readers will recognise.
Book of Dead is the only Play’n GO game on our list, while both Starburst and Gonzo’s Quest are produced by NetEnt, and these games feature prominently on NetEnt online casinos.
In terms of the rest of the games on our list, users can filter the Casumo lobby by provider once they know which studio they like. Studio loyalty is not the same as game quality, because the same studio makes both gentle and brutal games.
Remember to check the info panel for the RTP of your chosen slot, since a studio's games can run at different returns in different lobbies.
Slot tournaments and leaderboards at Casumo
When participating in a slot tournament, players opt in and play the nominated games in the qualifying window, before the leaderboard ranks them on the points the games award.
The leaderboard usually ranks multipliers or wins rather than the amount staked, which is why a small stake can still place.
A tournament rewards playing more of the nominated game, so it is not a way to improve the odds on any single spin.
Remember to check the qualifying games and the entry window before you start, since a session played outside the window does not count.
Also, be sure to treat the entry cost as the price of the entertainment, and not as an investment in the prize.
Limits and support at Casumo
Remember that gambling is only legal for people aged 18 and over based in the UK, and players must remember to gamble responsibly at all times.
These Casumo best slots should only be considered entertainment, so never bet more than you can afford, and never chase any losses.
Try to decide a stake before you start and stop when it is gone. You can set spending and deposit limits when you sign up to help you manage spending.
When using Casumo, players can take advantage of a wide range of account controls, including daily, weekly and monthly deposit limits, loss and wager limits, play-activity limits, login time blocks and reality reminders.
These limit decreases take effect immediately, while an increase needs a cooling-off period, which is exactly the design that protects a reader who sets the limit during a bad session.
Time-outs and self-exclusion sit alongside GamStop, so users who want a full break from every licensed UK site can exclude themselves from all online gambling sites for any period of time.
There are also several charities and healthcare providers in the UK that can provide free, confidential support and information if you want direct help with gambling-related issues. Useful sites include:
Best slots on Casumo - FAQs
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