Rainbow Riches Megaways slot

What the Rainbow Riches Megaways slot is

Barcrest launched Rainbow Riches in 2006, and the series grew into one of the most familiar names on British slots. The Megaways edition keeps the Irish luck theme but rebuilds the maths around a six-reel Megaways grid with cascades, a much bigger ceiling and high volatility.

Barcrest's roots are in the Manchester area, where it started with two staff in 1968; the arcade machine archive's Barcrest entry (opens in a new tab) keeps a record of the company's history. It has been owned by Light & Wonder since 2011, when the group was still called Scientific Games. More on our Barcrest page, and every review is on the slots hub.

Rainbow Riches Megaways against the original Rainbow Riches

The two games share a name and a theme, but they are built for very different sessions.

The Megaways edition is cheaper on average by one percentage point, which is £1 less average cost per £100 staked. But it trades the original's steadier medium volatility for a high-volatility profile with a top prize 25 times larger. If you liked the old game for its gentle pace, the Megaways version will feel very different. See the whole Rainbow Riches series for the other editions, including Pick 'n' Mix.

How the features work

Cascading wins

Winning symbols are removed after each win and new ones drop in. If the new symbols complete another win, it pays and the process repeats, so one paid spin can produce several wins. This is the standard cascading reels idea.

The Lucky Horseshoe wild

The Lucky Horseshoe is the game's wild, standing in for paying symbols to complete combinations.

Super Gems

When a Super Gem lands in the top row, every gemstone symbol on the screen transforms into a single matching gem type. Turning a mix of different gems into one kind can connect symbols across many reels at once, which in a game with tens of thousands of ways can build a large win.

Pot of Gold free spins with a multiplier that never resets

Four or more Pot of Gold scatters start the free spins. Four scatters give 12 spins, and each extra scatter adds five more. In the round, a win multiplier rises by one with every cascade and does not reset between spins, and it has no upper limit. Symbols marked +1, +2 and +3 add extra spins.

Features are described from the developer's game description, as summarised by OLBG's Rainbow Riches Megaways page (opens in a new tab). The paytable in the game sets out the exact rules.

Rainbow Riches Megaways free spins in numbers

The multiplier is what makes the round matter. Because it rises with each cascade and never drops back, it only goes one way. A round with lots of cascades early on means every later win is multiplied by a higher figure. A round with few cascades leaves the multiplier low, and the round can pay modestly. That's the root of the game's high volatility: two rounds triggered the same way can pay very different amounts.

Rainbow Riches Megaways RTP and what you'll spend

At a 96% RTP, the edge is 4%. Expected loss is the amount staked times 4%, which keeps the sums easy.

Staking all £20 once costs 80p on average at any stake; the bigger stake just gets there in fewer spins. With most of the return concentrated in free spins, more spins means more chances to reach them before a budget runs out. For a full method, see our guide to cost per hour.

High volatility and the 12,500x max win

Rainbow Riches Megaways is rated high volatility, with a top prize of 12,500 times stake. In pounds: £1,250 at 10p, £6,250 at 50p, £12,500 at £1, £25,000 at £2 and £62,500 at £5. The last two figures use the UK maximum slot stakes for players aged 18–24 and 25 and over.

The maximum is a ceiling the game rarely reaches. Most sessions on a high-volatility slot finish below the average cost shown above, while a small number finish well above it.

How to play Rainbow Riches Megaways in the UK

1. Sign up with a UK-licensed casino and complete age and ID checks.
2. Set a deposit limit at the prompt and settle on a session budget.
3. Load Rainbow Riches Megaways from the lobby and check the RTP in the game information.
4. Pick a stake within the £5 (25+) or £2 (18–24) slot cap.
5. Spin by hand; cascades resolve automatically before the next spin.
6. Look out for Super Gems in the top row and Pot of Gold scatters.
7. Check the session timer and net position on screen and stop when planned.

UK rules for Rainbow Riches Megaways

This is a British-made slot, and it follows the Gambling Commission's rules like any other. The online slots stake limit guidance (opens in a new tab) caps stakes at £5 a game cycle for players aged 25 and over (since 9 April 2025) and £2 for 18–24s (since 21 May 2025). Since 31 October 2021, autoplay and turbo have been banned on slots, each spin takes at least 2.5 seconds, and a return at or below your stake can't be celebrated as a win.

There's no feature buy: since a Gambling Commission warning in January 2020, feature buy-ins are not offered to British players. Our guides to game design rules and stake limits cover the detail.

Rainbow Riches Megaways myths

• “A high multiplier means the round is about to pay big.” The multiplier only scales wins that land; it doesn't make the next win any more likely.
• “Lucky charms change the odds.” The theme is decoration. Results come from a certified random number generator; see random number generators.
• “A long dry run means the Pot of Gold is due.” Spins are independent, so past results don't shift the next one.

Where to play Rainbow Riches Megaways

We can't confirm which partners list this game, so check the casino's game lobby. The offers below are slot offers on named or selected games and may not cover it. 18+ and terms apply.

• PlayOJO: new UK customers (Northern Ireland excluded) making a first deposit of at least £10 get 80 free spins on Big Bass Bonanza, each worth 10p. Winnings land as cash because there's no wagering. The offer can't be combined with others and works only via the designated offer link.
• Coral: between 1 October 2026 and 1 February 2027, new players who deposit and bet £10 or more on slots get 100 free spins on selected games at 10p. There's a 48-hour window to accept the spins and 7 days to use them, and no wagering on what they win. The offer excludes deposits made with Neteller, PayPal, Paysafe, Skrill, prepaid cards and some debit cards.
• Ladbrokes: new customers who deposit and spend £10+ on slots get 50 free spins a day for the first 10 days, up to 500, at 10p each on selected games. Claim each day's spins by 23:59; they stay valid for 7 days and nothing they win is wagered. Prepaid cards, PayPal, Paysafe, Neteller, Skrill and Moneybookers can't be used for the qualifying deposit.

Since LC International Limited runs both Coral and Ladbrokes, you may not be able to hold new accounts at both.

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.