How we check and rate
Where our figures come from and what we do when sources disagree.
By Ryan Jessop. Last checked .
Key takeaways
- Slot figures need two sources.
- Conflicts are shown as ranges.
- Developer notes are general background.
- Commission never sets a score.
Slot figures
Developer, default RTP, volatility, layout, ways to win and maximum win are each confirmed by at least two independent sources. Where they conflict, as with Sweet Bonanza's RTP and Fishin' Frenzy's volatility, we show the range.
Mechanics
Descriptions of how features work are taken from the same sources and written in our own words. We do not publish feature trigger rates, because developers rarely do.
Developers
Studio background is general industry knowledge. Which developers a casino carries comes from recent independent reviews and can change.
Calculations
Hourly cost and top-prize figures are arithmetic on the default RTP and the UK stake limits. They are labelled as averages or arithmetic and are not predictions.
Slot site scores
| Casino | Overall | Welcome offer | Slots and games | Live casino | Payments | Mobile |
|---|---|---|---|---|---|---|
| Coral Casino | 4.3/5 | 9.0 | 8.5 | 8.5 | 8.5 | 8.5 |
| Ladbrokes Casino | 4.2/5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 |
| PlayOJO | 4.2/5 | 9.0 | 8.5 | 8.5 | 8.0 | 8.5 |
| Casumo | 4.2/5 | 7.0 | 9.0 | 8.5 | 8.5 | 8.5 |
| 10bet Casino | 3.8/5 | 6.5 | 8.0 | 7.5 | 8.0 | 8.0 |
Desk-based: the offer score rests on published terms; the rest on independent reviews.
Commission
We may earn commission when you join through our links. It does not alter a figure, score or order. Advertiser disclosure.
Updates
Rechecked monthly. Corrections: hello@onlineslot.uk.com. About; Ryan Jessop; home.
Frequently asked questions
Where do RTP figures come from?
Developers' defaults, confirmed by two sources.
Do you test with real money?
Not at present.
Can a casino pay for a score?
No.