Rainbow Riches slot review

What is the Rainbow Riches slot?

Rainbow Riches is a classic five-reel video slot from Barcrest, a British studio whose roots near Manchester go back to 1968. It uses a 5 × 3 grid with up to 20 paylines and an Irish luck theme with a leprechaun as the bonus symbol. We cover it, and several spin-offs, in our mobile slots section.

Barcrest started the Rainbow Riches series in 2006 and is now owned by Light & Wonder, which bought it as Scientific Games in 2011. That makes it one of the longer-running names in UK online slots. Our Barcrest studio guide covers the rest of the catalogue.

The key numbers are modest by modern standards: a 95.00% return to player, medium volatility and a 500x stake top win. Read the Rainbow Riches slot as a steady, feature-led game, not a jackpot chase.

How the features work in Rainbow Riches

Rainbow Riches has no free spins round. Instead, three different symbol combinations each start their own bonus, and each pays a prize based on your stake.

Road to Riches

Land three leprechaun bonus symbols and you move to a trail of rising multipliers. You spin a wheel, and the result moves you up the trail. You keep climbing until the wheel shows 'Collect', at which point you take the multiplier you have reached.

Wishing Well

Three or more Wishing Well scatters start a pick feature. You choose from the wells on screen, and your pick reveals a cash multiplier of your stake. Because they are scatters, the wells don't need to sit on a payline.

Pots of Gold

Three Pots of Gold symbols must land on reels 2, 3 and 4 together to start this one. A pointer travels around several pots and stops on one, and that pot's prize is paid.

The prize values inside each feature are set by the game, not by you, and every outcome is decided by the random number generator. The help screen in your app shows the exact paytable for the version you're playing.

Rainbow Riches RTP and volatility explained

An RTP of 95.00% means that, across a very large number of spins, the game is designed to pay back £95 for every £100 staked. The other £5 is the house edge. Over a single session your result can be far above or below that, but the edge is what you pay on average.

Medium volatility sits between frequent small wins and rare large ones. With a 500x ceiling, the very top prizes in Rainbow Riches are smaller than in high-volatility modern slots, so your balance tends to move in shorter swings.

There is a catch worth knowing. Barcrest's games typically run at around 94% to 96%, often linked to the stake you choose, so the 95.00% figure may not be the version in front of you. The Gambling Commission's game information rules require the RTP or likelihood of winning to be available before you play.

1. Open Rainbow Riches in your casino app, but don't spin yet.
2. Find the game's rules or help screen from inside the game window.
3. Look for the return to player figure, and check whether it changes with stake.
4. If the RTP differs at different stakes, note which stake gives the figure you're comfortable with.
5. Close the help screen and set your stake before your first spin.

Our guide to finding a game's RTP in an app covers where different apps put this information.

What £20 gets you on Rainbow Riches at 10p, 50p and £1

Expected loss is stake × house edge. At 95.00% RTP the edge is 5%, so every £1 staked costs 5p on average. The table below assumes a pace of one spin every six seconds, or 600 spins an hour, which is slower than the legal minimum spin time allows.

So £20 at 10p gives you 200 spins before any wins come back, and the average cost of an hour is £3. At £1 a spin the same £20 covers only 20 spins, and an hour of play costs £30 on average. These are averages; a medium-volatility game can drain £20 faster or keep you going much longer.

Playing the Rainbow Riches slot on iPhone and Android

Rainbow Riches runs inside casino apps and mobile browsers like any modern online slot, built on HTML5 rather than a separate download. You open it from the app's game lobby, and it loads within the casino's own app.

The 5 × 3 grid is one of the easier layouts to read on a small screen, because there are only 15 symbol positions. Whether the game fills the screen in portrait or asks you to rotate depends on the version and the app, so turn your phone and see which view suits you. Our portrait vs landscape guide explains the trade-offs.

• On iPhone, casino apps come from the App Store; see casino apps on iPhone.
• On Android, use Google Play or the operator's own instructions; see casino apps on Android phones.
• Graphics are light, but bonus animations still use data, so a stable connection helps.

If the connection drops mid-feature, UK rules require the game to handle interrupted play fairly, and your app's history should show the result.

UK rules that shape Rainbow Riches in casino apps

Barcrest's history is in physical machines, going back to its first game, Invader, in 1970. Online, though, Rainbow Riches follows the Gambling Commission's remote rules, which are stricter on speed and stake.

The stake limits are set out in the Commission's online slots stake limit guidance (opens in a new tab), and the speed and celebration rules sit in RTS 14 on responsible product design (opens in a new tab). See our pages on slot stake limits and why UK apps have no autoplay for the detail.

Since a Gambling Commission warning in January 2020, feature buy-ins are not offered to British players, so you can only reach the three bonuses by landing their symbols.

Other Rainbow Riches slots and similar games

The original game spawned a whole family. Each one plays very differently, so don't assume the same RTP or volatility.

Rainbow Riches Megaways moves the theme to a high-volatility, 117,649-ways format. Rainbow Riches Pick 'n' Mix lets you pick three of five bonus features before you play, and Reels of Gold uses colossal reels. For a different leprechaun game, Lucky Leprechaun has a higher published RTP.

Is the Rainbow Riches slot worth playing?

It suits players who like a simple layout and several small bonus games rather than one long free spins round. It suits less well if RTP is your priority, since 95.00% is below many newer slots in our high RTP slot apps list.

Where to play Rainbow Riches with a UK welcome offer

None of our partner offers is linked to Rainbow Riches, and we can't confirm which apps carry it, so check the game lobby before you join. The offers below are slot welcome offers on named or selected games. All are 18+ and terms apply.

• PlayOJO: new UK customers (excluding Northern Ireland) who make a first deposit of £10 or more get 80 free spins on Big Bass Bonanza at 10p each. No wagering, winnings are paid in cash, it can't be combined with other offers and it's only available through the designated offer link.
• Coral: new players between 1 October 2026 and 1 February 2027 who deposit and bet £10 or more on slots get 100 free spins on selected games at 10p each. Accept within 48 hours; spins last 7 days; no wagering on winnings. Neteller, PayPal, Paysafe, Skrill, prepaid cards and certain debit cards don't qualify.
• Ladbrokes: new customers who deposit and spend £10 or more on slots get 50 free spins a day for 10 days, up to 500, at 10p each on selected games. Claim before 23:59 each day; spins last 7 days; no wagering. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers deposits don't qualify.

At face value the spins are worth £8 at PlayOJO, £10 at Coral and up to £50 at Ladbrokes. Coral and Ladbrokes are both run by LC International Limited (Entain), so you may not be able to hold new accounts at both; see why Coral and Ladbrokes accounts are linked. The house edge still applies to every spin you play afterwards.

18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.