

Double Rainbow is an Irish-luck slot that pays in clusters on a 6×7 board with a rainbow bonus. It pairs a soft 94.53% return with a 5,000x ceiling, set at medium variance. The bet range runs from $0.20 to $100 a spin, so most floats fit.
This Double Rainbow review leads with the bonus, since the rainbow feature is the headline draw. The green-meadow art is bright, while the clusters carry the bigger pays.
| Spec | Detail |
|---|---|
| Theme | Irish luck |
| RTP | 94.53% |
| Grid | 6×7, cluster pays |
| Volatility | Medium |
| Max win | 5,000x |
| Bet range | $0.20 to $100 a spin |
The 6×7 board scales cleanly from desktop to phones and tablets. Touch controls handle staking and spins, so play feels the same on a small screen. The large grid stays readable on mobile.
The return and the bonus stay identical across devices. So you can switch between desktop and mobile without changing the game. Performance still depends on the casino client.
The design leans into a rolling green meadow of clovers, rainbows, and a grinning leprechaun. The palette is bright green and gold, so the luck shines. Because the icons are clean, the large 6×7 board reads well.
Sound carries a jaunty, fiddle-led loop that lifts on each cluster. Since the styling stays cheerful, the lucky feel holds up well. The bright look also fits many crypto casinos.
🎯 Did You Know? A double rainbow forms when light reflects twice inside the raindrops. The second arc always shows its colours in reverse order.
Wins land when five or more matching symbols touch, side by side, anywhere on the 6×7 grid. There are no fixed lines, so shape never matters, only the size of each group. After a win, those symbols clear and new ones drop in.
Clovers, horseshoes, pots of gold, and a cheeky leprechaun fill the grid, while a wild stands in for the pays. The bet range runs from $0.20 to $100 a spin, so it suits most floats. As a result, one busy board can pay several clusters at once.
⚡ Quick Fact: A cluster engine pays every touching group on the screen, so a single large board can land several wins from one spin.
No staking system shifts the listed return, so bankroll control is the only real lever. Because the variance is medium, a float of around 100 times your stake works well. At a $1 spin, that is roughly $100 in reserve with a firm stop-loss.
Keep stakes low, since the soft edge works against a longer session. Pick a licensed operator under a Malta Gaming Authority or Curacao licence, and read the cashier terms first. If play stops being fun, pause and use the free tools at BeGambleAware or GamCare. Players must be 18 or older. The game runs at many slots casinos and free-spins casinos.
The plain math is that 94.53% sits well below the 96% modern average. That figure keeps about 5.5 cents of each dollar over the long run. So this is a soft return, weaker than most modern reels.
Across 1,000 spins at $1, a 94.53% return implies near $55 in expected cost before variance moves it. Still, that figure is a theoretical long-run average, not a session forecast. So the bonus is the lure here, not the edge.
⚠️ Caution: A soft 94.53% return means thinner long-run value. The bonus carries the top end, so a higher-RTP slot pays better odds.
The bonus is the heart of the game, since the better pays gather there. Scatter symbols trigger a free-spins round, so reaching it is the main goal. A rainbow multiplier can climb across the round and lift the totals.
Because the round drives most of the upside, the base game mostly builds toward it. As the multiplier rises, a strong run moves toward the ceiling. If you like a cluster game, Reactoonz is an alien grid slot with a cascading bonus.
💡 Pro Tip: The rainbow multiplier carries the value, so the bonus is the goal. With a soft edge, keep stakes low so the float lasts.
The return is 94.53%, well below the modern average. That makes the value soft. Always confirm the figure in the casino game panel.
Scatter symbols trigger a free-spins round with a climbing rainbow multiplier. It carries most of the win potential. See the game rules for the exact trigger.
It pays in clusters of five or more touching symbols. Wins clear and new symbols drop in. That cascade can pay several times from one spin.
The maximum win is 5,000 times your stake. It needs a strong bonus run. Treat the ceiling as a very rare outcome.
No, it carries a medium rating, so wins arrive at a steadier pace. Quiet spells stay shorter than on a high-variance slot. Plan a steady float for the swings.
Yes. The 6×7 board scales cleanly to phones and tablets. Touch controls handle spins with ease. Performance depends on the casino client.
The takeaway is a cheerful Irish slot let down by a soft edge. Double Rainbow pairs a luck theme and a rainbow multiplier bonus with medium variance and a 5,000x ceiling. The bonus is the draw, while the 94.53% return is the real cost. Anyone over 18 should check the RTP panel and keep stakes sensible.
⭐ Our Verdict
A cheerful Irish cluster slot with a 5,000x ceiling, but a soft 94.53% return makes a higher-RTP slot the smarter value pick. The rainbow bonus is the draw.
👥 Best For: players who enjoy an Irish theme, a cluster grid, and a rainbow bonus, and who do not weigh the return first. Less suited to value-led grinders. Widely stocked at certified casinos.
This Double Rainbow review is verified periodically against the latest game data and casino paytables.
You can play Double Rainbow at the licensed operators we rate highest, including our bonus buy casinos, free spins casinos, crypto casinos, crypto slots sites and the best slots casinos.
Play responsibly. 18+ only. For free, confidential support visit BeGambleAware.