The slot library
All slots compared
| Slot | Developer | Default RTP | Volatility | Layout | Ways to win | Max win |
|---|
| Big Bass Bonanza | Pragmatic Play | 96.71% | High | 5 reels, 3 rows | 10 paylines | 2,100x |
|---|
| Starburst | NetEnt | 96.09% | Low | 5 reels, 3 rows | 10 paylines, paying both ways | 500x |
|---|
| Sweet Bonanza | Pragmatic Play | Varies by version (96.48% to 96.51% quoted) | High | 6 reels, 5 rows | Pays anywhere (8 or more matching symbols) | 21,100x |
|---|
| Gates of Olympus | Pragmatic Play | 96.50% | High | 6 reels, 5 rows | Pays anywhere (8 or more matching symbols) | 5,000x |
|---|
| Book of Dead | Play'n GO | 96.21% | High | 5 reels, 3 rows | 10 paylines | 5,000x |
|---|
| Fishin' Frenzy | Blueprint Gaming (Reel Time Gaming) | 96.12% | Medium to high | 5 reels, 3 rows | 10 paylines | 5,000x |
|---|
| Fluffy Favourites | Eyecon | 95.39% | High | 5 reels, 3 rows | 25 paylines | 5,000x |
|---|
Developers' published defaults, confirmed against two or more sources on 5 October 2026. Casinos may run lower RTP settings.
Slots by type
Classic paylines
Starburst, Big Bass Bonanza, Book of Dead and Fluffy Favourites use fixed or selectable lines on a five-reel grid.
Pays anywhere
Gates of Olympus and Sweet Bonanza drop paylines altogether: eight or more matching symbols anywhere on a 6 by 5 grid pay, and winners tumble away.
Fishing slots
Big Bass Bonanza and its forerunner Fishin' Frenzy.
Low volatility
Only Starburst, so far. It is the one to choose for a small budget.
Highest return
Big Bass Bonanza at 96.71%, followed by Gates of Olympus at 96.50%. The high RTP page ranks them all.
Narrower lists: high volatility slots, Pragmatic Play slots, free demo slots and mobile slots. To set two games side by side, use the slot comparison tool.
By developer
| Developer | Slots reviewed | Reported at |
|---|
| Pragmatic Play | Big Bass Bonanza, Sweet Bonanza, Gates of Olympus | Coral, Ladbrokes, PlayOJO, Casumo and 10bet |
|---|
| NetEnt | Starburst | Coral, PlayOJO, Casumo and 10bet |
|---|
| Play'n GO | Book of Dead | Casumo |
|---|
| Blueprint Gaming (Reel Time Gaming) | Fishin' Frenzy | Coral |
|---|
| Eyecon | Fluffy Favourites | 10bet |
|---|
How to read our reviews
Each review opens with a facts table. Default RTP is the developer's standard setting. Volatility is the developer's own rating. Maximum win is the most one spin can pay as a multiple of the stake. If sources disagree on a figure we show the range or leave it out. The RTP and volatility guides explain the two that matter most, and how slots work covers the mechanics.
Where to play
Five UK-licensed slot sites are compared on best slot sites UK.
Ad 18+ only. We may earn commission from these links. Advertiser disclosure
Coral Casino ★ 4.3 out of 5
Bet £10 on slots, get 100 free spins
No wageringFree spins
- Wagering
- None
- Minimum
- £10
- Time limit
- 48 hours to accept, then 7 days
- Worked value
- 100 spins at £0.10 (£10 in spins)
Significant terms: 18+. New players only. Offer runs 01/10/2026 to 01/02/2027. Deposit (certain types excluded) and bet £10+ on slot games to get 100 free spins (selected games, £0.10 each, 48 hrs to accept, valid 7 days). No wagering on free spin winnings. Deposits by Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards do not qualify. Restrictions and T&Cs apply. BeGambleAware.org
Ladbrokes Casino ★ 4.2 out of 5
Play £10 on slots, get up to 500 free spins
No wageringFree spins
- Wagering
- None
- Minimum
- £10
- Time limit
- Claim daily for 10 days; each batch valid 7 days
- Worked value
- Up to 500 spins at £0.10 (up to £50 in spins)
Significant terms: 18+. New customers only, from 14/11/25 until further notice. Certain deposit methods excluded. Deposit and spend £10+ on slots for 50 free spins a day during the first 10 days after first deposit and registration (max 500, £0.10 each, selected games, claim before 23:59 each day, valid 7 days). No wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers deposits do not qualify. Restrictions and T&Cs apply. BeGambleAware.org
PlayOJO ★ 4.2 out of 5
80 free spins, no wagering
No wageringFree spins
- Wagering
- None
- Minimum
- £10
- Time limit
- See offer terms
- Worked value
- 80 spins at £0.10 (£8 in spins)
Significant terms: 18+. First deposit only. Minimum deposit £10. 80 free spins on Big Bass Bonanza, £0.10 each. No wagering requirements; winnings paid in cash. Cannot be used with any other offer. Only available to players who arrive through the designated offer link. Full T&Cs apply. BeGambleAware.org
Casumo ★ 4.2 out of 5
50% bonus up to £100
10x wageringMatched deposit
- Wagering
- 10x bonus
- Minimum
- £20
- Time limit
- 7 days to complete wagering
- Worked value
- Deposit £200, get £100 bonus
Significant terms: 18+. New customers only. Opt-in required. 50% deposit bonus up to £100 on first deposit. Minimum deposit £20. 10x wagering on the bonus amount. Maximum bet or spin £5. Bonus valid for 7 days. Game, play and payment method restrictions apply. Full T&Cs apply. BeGambleAware.org
10bet Casino ★ 3.8 out of 5
100% bonus up to £25
10x wageringMatched deposit
- Wagering
- 10x bonus
- Minimum
- £10 (check at sign-up)
- Time limit
- 3 days to complete wagering
- Worked value
- Deposit £25, play with £50
Significant terms: 18+. New UK customers only. Select the casino welcome bonus at sign-up and make your first deposit within 7 days. 100% bonus up to £25. Wager the bonus 10x on slots within 3 days. Maximum bonus winnings £1,000. Bonus is not redeemable. Full T&Cs apply. BeGambleAware.org
How we check
Slot figures on this site are the developer's published defaults, each confirmed against at least two independent sources. Offer terms are taken from the casinos' published conditions and dated 5 October 2026. Licences are confirmed on the Gambling Commission register. Where sources disagree we say so. The method is on how we check and rate.
Play safely
Slots are fast, and they are designed so the house wins over time. Decide what the session is worth to you before you open a game, set a deposit limit, and stop when the money is gone. Free, confidential help is available from the National Gambling Helpline on 0808 8020 133. Our safer gambling page lists the tools and services.
