The licence rules are the same for both
A site named after one slot and a household casino brand answer to the same regulator. If it holds a Gambling Commission licence, the same conditions apply: players must be 18 or over, an online slot spin is capped at £5, or £2 for 18 to 24 year olds, deposit limits and self-exclusion must be on offer, and the site must take part in GamStop.
So the protection you get does not depend on how big the name is. It depends on whether the site is licensed at all, and that takes a minute to check: the account number is in the footer, and the Commission's public register shows which domains sit under it. Every casino in our Rainbow Riches list passed that check on 10 October 2026.
Many slot sites belong to a bigger operator
A dedicated slot site is often a brand of a large group rather than a small independent. Rainbow Riches Casino is operated by Gamesys Operations Limited, and the register lists rainbowrichescasino.com as a white label under Gamesys's account 38905, next to virgingames.com and monopolycasino.com.
| Casino | Kind of site | Licence holder | UKGC account | Domains on the account | Rainbow Riches titles |
|---|---|---|---|---|---|
| Rainbow Riches Casino | dedicated slot site | Gamesys Operations Limited | 38905 | 13 | 19 |
| Virgin Games | casino and bingo brand | Gamesys Operations Limited | 38905 | 13 | 10 |
| Mecca Bingo | bingo and slots brand | Rank Interactive (Gibraltar) Limited | 57924 | 15 | 20 |
| Betway | sports and casino brand | Betway Limited | 39372 | 12 | 15 |
| PlayOJO | casino brand | Skill On Net Limited | 39326 | 61 | 15 |
| MrQ | slots-first casino | Tek Fox Ltd | 60629 | 1 | 8 |
Register entries as of 10 October 2026. MrQ is the only casino here whose licence holder lists a single domain.
What a dedicated slot site does better
A site built around one series puts that series first. Rainbow Riches Casino has its own pages for 19 Rainbow Riches titles, three of them in its bingo section, and it is the only casino in our list whose welcome spins are on a Rainbow Riches game: 30 spins on Pick N Mix, with no wagering on the winnings.
Its game pages also spell out the bonus rules of each title, such as the 500x maximum on each of the original's three features. If you came for one series and nothing else, that focus saves time. Set side by side with two big brands, the trade-offs look like this:
| What we compared | Rainbow Riches Casino | Mecca Bingo | Betway |
|---|---|---|---|
| Rainbow Riches titles | 19 | 20 | 15 |
| Welcome spins on a Rainbow Riches game | yes | no | no |
| RTP of the original on the game page | no | 95.00% | no |
| Lowest published deposit | £10 for the offer | £5 | £10 for the match bonus |
| Sports section in the main menu | yes | no | yes |
The Rainbow Riches games guide shows which titles each casino carries.
What a big brand does better
A large brand usually offers more beyond the one series. Betway runs a sportsbook alongside its casino, Mecca Bingo has bingo rooms and land-based clubs, and both carry 15 or more Rainbow Riches titles anyway. Mecca Bingo also prints the RTP of the original on its game page, 95.00%, and has the lowest published deposit in our list, £5.
Being big does not guarantee a better deal on the game itself. Virgin Games, a famous name on the same licence as Rainbow Riches Casino, carries only ten titles from the series, and of the two casinos that print an RTP, the lower figure, 93.99%, comes from MrQ. Check the RTP by casino before choosing on reputation alone.
How to choose between them
Decide by the things that actually differ, in this order:
- The licence: look up the account number from the footer in the register.
- The game: does the casino have the Rainbow Riches title you want?
- The RTP: is it printed, and which version is it?
- The offer: which game are the welcome spins for, and is there wagering?
- The deposit: what is the lowest amount, and does your payment method count?
On a small budget, the deposit and stake matter more than the brand; our page on volatility for a small budget explains why.
