2018
medium (3/5)
7
Cluster Pays
20p to £100
5,000 x
Double Rainbow Slot Review & Free Demo
Double Rainbow slot from Hacksaw Gaming landed in 2022 with a 7×6 grid, cluster wins and enough colour to make your eyes water. In the casino Double Rainbow game, we’re herding candy-coloured clouds and reel multipliers rather than chasing a standard bonus round. Anyone tempted to play online Double Rainbow will quickly realise the whole thing revolves around building up rainbow reels through clouds, extra spins, and chunky multipliers. The tone is soft and playful, but beneath the cute surface sits a medium-volatility engine that can still throw around serious hits if you keep your nerve. We’ve put plenty of spins through this one already, so this review walks through how it works, where it shines and where it can feel a touch swingy.
Unique In-Game Features & Why It Stands Out
At first glance slot game Double Rainbow looks like another cute grid, but there are a few things that make it feel very different from the average casino game. The twist is that every reel holds a hidden colour multiplier, and clouds can unlock them, stack them and keep them alive for extra spins. As an online slot Double Rainbow is tuned more for relaxed gaming on any mobile device than high-stakes punishment, and that shapes how the whole thing is built.
- Rainbow Reels rather than classic bonuses. Each of the seven reels has its own colour and multiplier, revealed and boosted by cloud symbols. Instead of chasing one traditional feature, you’re slowly charging these reels and hoping they all light up together. This game type sits somewhere between a standard grid slot and a full-blown multiplier ladder.
- Normal Clouds that add power and spins. A regular cloud activates the reel it lands on, assigns a colour and slaps on a multiplier between x2 and x250, then adds an extra paid spin where all active reels and their multipliers stay live.
- Double Rainbow Clouds that super-charge the board. The rarer Double Rainbow Cloud adds its multiplier to every active reel, not just one column, and throws in three extra spins with all those boosted reels locked in. This is where the balance can jump sharply.
- Full Rainbow for the real bangers. If you manage to have all seven reels active at the same time, the Full Rainbow effect can multiply existing reel values by up to x10 and award five more spins, turning even modest clusters into serious hits.
- Built to travel. The slot runs smoothly in browser on laptops, tablets and phones, including iOS and Android, and the interface scales sensibly instead of cramming everything into tiny buttons.
How to Play Double Rainbow Slot at an Online Casino?
Getting started with casino online Double Rainbow is straightforward, but there are a few boxes worth ticking before you play Double Rainbow slot for real. Here’s the short version of the journey from registration to first spin.
Pick a safe, licensed site.
Choose a properly regulated online casino that carries this slot and not just sports or table games. We tend to favour brands with a solid spread of live casino games, including roulette, blackjack and other live dealer games, plus responsive customer support over email and live chat.
Set up your account carefully.
Most new players will fly through registration in a few minutes: basic details, verification checks and setting some preferences. Before you tick the final box, skim the welcome bonus page to see whether any bonus code is required and which bonus offers actually suit slot play rather than just sports or poker.
Add funds and read the promo small print.
When you make your first deposit, decide in advance how much you’re genuinely happy to risk on this session. Take a look at any deposit bonus, deposit match deals, daily bonus schemes and broader casino bonuses, and pay attention to wagering rules, payment methods, deposit limits and how the site handles a withdrawal back to your card or wallet.
Adjust stake and controls.
Once you’re logged in, use the plus and minus buttons by the stake selector to find a level that fits your bankroll, then explore the autoplay and other betting options. Keep an eye on how each wager size affects the max potential payout shown in the info panel.
Locate the slot in the lobby.
Head to the slots or grid-style section of the lobby and filter by provider or search for Double Rainbow by name. Add it to your favourites if the platform supports that so you can come back to it quickly.
Open the game and ease into it.
Fire up the slot and decide whether you want a few practice spins or to risk actual cash straight away. We generally nudge the stake down for the first couple of sessions, then only step it up if the balance co-operates.
Gameplay & Key Symbols — Double Rainbow
Under the pastel visuals slot machine Double Rainbow is a 7×6 cluster title with cascading wins and colour-based reel multipliers. Wins land when five or more matching sweets connect horizontally or vertically, then vanish to make room for new symbols. There’s no separate bonus round; instead, cloud symbols unlock extra paid spins and build up those reel multipliers directly on the main grid. In practice it feels more like charging up an engine for bursts of potential than spinning towards a single, scripted feature.
- RTP and configurations. The default return-to-player sits at 96.38%, but Hacksaw supply lower settings (down into the very low-90s) that some sites choose instead. It’s always worth checking the info page at your chosen casino to confirm which version you’re actually playing.
- Volatility and hit rate. Officially the volatility is rated 3/5, so squarely medium. The hit rate is around 39–40%, meaning you’ll see a fair number of small clusters, but the slot still leans on those charged multipliers to deliver punchy boards.
- Reel multipliers in brief. Each of the seven columns hides a multiplier linked to one colour of sweet. When activated by clouds, that multiplier applies to all clusters containing the matching colour on that reel, and multiple reels can boost the same cluster if it stretches across the board.
- Maximum potential. The paytable tops out at x50 the stake for clusters of 15+ sweets, but that’s before any reel multipliers or global boosts. Combine several pumped-up reels with a Full Rainbow and you can theoretically reach the 5,000x cap on a good board.
Symbols & Payouts
The Double Rainbow game keeps its symbol set deliberately small, which helps once you’ve seen a few cascades. Seven candy shapes all share the same paytable, while the wild lightning bolt and the two cloud symbols act as utility icons rather than direct payers. Below are the raw cluster values; remember that reel and global multipliers from the feature can super-charge these significantly.
- Red Square (highest-paying, tied)
- 5 in a cluster – x0.1
- 6 in a cluster – x0.2
- 7 in a cluster – x0.4
- 8–9 in a cluster – x1
- 10–11 in a cluster – x3
- 12–14 in a cluster – x10
- 15+ in a cluster – x50
- Orange Circle
- 5 – x0.1
- 6 – x0.2
- 7 – x0.4
- 8–9 – x1
- 10–11 – x3
- 12–14 – x10
- 15+ – x50
- Yellow Triangle
- 5 – x0.1
- 6 – x0.2
- 7 – x0.4
- 8–9 – x1
- 10–11 – x3
- 12–14 – x10
- 15+ – x50
- Green Heart
- 5 – x0.1
- 6 – x0.2
- 7 – x0.4
- 8–9 – x1
- 10–11 – x3
- 12–14 – x10
- 15+ – x50
- Blue Star
- 5 – x0.1
- 6 – x0.2
- 7 – x0.4
- 8–9 – x1
- 10–11 – x3
- 12–14 – x10
- 15+ – x50
- Pink Moon
- 5 – x0.1
- 6 – x0.2
- 7 – x0.4
- 8–9 – x1
- 10–11 – x3
- 12–14 – x10
- 15+ – x50
- Purple Flower
- 5 – x0.1
- 6 – x0.2
- 7 – x0.4
- 8–9 – x1
- 10–11 – x3
- 12–14 – x10
- 15+ – x50
Extra Spins & Multipliers
Extra Spins & Multipliers is the heart of Double Rainbow and the main reason it feels different from most grid slots. In our sessions, the strong boards mostly came from longer stretches of extra spins where nothing looked special at first and then everything clicked at once.
- Rainbow Reels as the core engine. Each reel has a hidden colour and multiplier. Once activated, that multiplier applies to any cluster containing the matching colour touching that reel, and several reels can boost the same group if it stretches across the grid.
- Normal Cloud behaviour. A standard cloud activates its reel if it’s inactive, assigns a colour, and increases that reel’s multiplier by a random amount between x2 and x250. It also grants one extra spin with all active reels and multipliers locked, effectively giving you something very close to free spins inside the base game.
- Double Rainbow Cloud behaviour. This rarer cloud adds its multiplier to every active reel rather than just one, and awards three extra spins with all those values intact, so boards can jump in strength in just a few rounds.
- Full Rainbow finale. When all seven reels are active at once, the Full Rainbow effect multiplies every existing reel value again by up to x10 and adds five more extra spins.
Min & Max Bet at Double Rainbow Casino Slot
Bet sizes in Double Rainbow are flexible enough for cautious players and high-rollers, which matters if you’re treating Double Rainbow real money spins as a slow burn rather than a white-knuckle ride. The numbers below are typical; individual casinos can tweak them slightly.
| Bet Level | Total Bet (USD) |
|---|---|
| Minimum stake per spin | $0.10 |
| Maximum stake per spin | $100.00 |
Demo / Free Play Version
There’s a fully featured Double Rainbow demo available at many casinos and slot portals, and it mirrors the paid version in every important way. Reels, clouds, multipliers and hit rate all behave identically, so Double Rainbow free play is a safe way to learn the rhythms before you risk bankroll. We recommend a decent demo run before committing cash, especially with feature-driven titles like this.
- Learn the cloud logic. The demo is perfect for seeing how Normal and Double Rainbow Clouds land, how often they appear and how quickly multipliers can grow on different reels.
- Get a feel for streaks. Because volatility is only medium, you’ll see both dry patches and sudden bursts of extra spins; demo sessions help you decide what sort of swings you’re comfortable with.
- Test different stake levels. Even though it’s play money, you can simulate the stakes you’d use with cash to see how the balance might move over a long set of spins.
- Practise quitting. It sounds dull, but practising when to stop during a run of extra spins in demo mode makes it easier to walk away at sensible points once real cash is involved.
Smart Betting Tactics
Because the slot doesn’t rely on a single bonus round, your approach matters more than usual. You’re trying to drip-feed clouds and extra spins into the balance rather than chasing one huge winning board from nowhere. Our suggestions below come from plenty of real sessions, not just a quick skim of the paytable.
- Treat Double Rainbow play as a builder. Think of this as a “charge up the reels” title where you’re happy with steady progress and only occasional massive boards, not constant fireworks every few spins.
- Favour long, modest sessions. Medium volatility plus extra spins means the game can turn quickly; smaller stakes over more spins give the multipliers time to develop without hammering your balance.
- Watch reel coverage, not just values. A giant multiplier on a single colour is much less helpful if your clusters rarely touch that reel.
- Be realistic about bonus-buy style modes. In jurisdictions where purchase options are allowed, remember that paying upfront for a charged-up board doesn’t guarantee a huge return; it simply front-loads the variance.
- Set personal caps on sessions. Decide your maximum number of spins or time for a sitting before you start, and stick to it, even if it feels like “one more cloud” is just around the corner.
When to Play/When to Stop
Double Rainbow might look harmless, but the extra-spin sequences can chew through cash surprisingly quickly if you’re not paying attention. We’d class it as a game where you should never stake more than around 0.5% of your overall balance on a single spin. That means a $500 bankroll caps each bet at about $2.50. Use the cashier tools and built-in timers as part of your responsible gambling routine, and never gamble longer or higher than you planned just because multipliers are building.
Recommendations for Playing Double Rainbow by LiveCasinoComparer
Finally, a few practical notes from our LiveCasinoComparer team on how Double Rainbow fits into a broader session. These aren’t hard rules, just habits that have worked for us when we’ve mixed it with other titles.
- Use it as a break from live tables. If you usually camp at the live casino tables with a live dealer, treat this as a palate cleanser between hands rather than a main event; it has no dealer to slow things down, so spins can fly by if you’re not careful.
- Don’t rely on lobby rankings. We don’t lean on the “popular games” row to find it; we bookmark the slot or pin it in the favourites tab so we can dip in and out without scrolling endlessly.
- Plan when to stop a rainbow run. Full boards of active reels feel great, but we like to set a target and walk away once a strong hit lands instead of chasing another, even bigger spike.
- Use sound as a cue. The audio ramps up noticeably when clouds and multipliers start rolling; if that’s pulling you into longer sessions than you wanted, muting can help keep the slot in its place.
- Keep sessions medium. In our tests, we treat slots Double Rainbow as a medium-length session title rather than something to hammer for hours on end.
Best Casinos to Play Double Rainbow
Final Verdict on Double Rainbow
Double Rainbow is a quirky, medium-volatility grid title for players who like colour, clouds and multipliers more than old-school line play. We’d happily suggest it to anyone who enjoys tinkering with systems and watching multipliers climb, but it’s probably not ideal if you crave constant features or very simple maths. It fits best as a side piece to your broader casino experience rather than the only thing you load up. As part of our casino review 2026 coverage, it stands out for doing something genuinely different without overcomplicating things.
FAQs
Is Double Rainbow A High Volatility Slot?
No. Double Rainbow is officially rated as a medium-volatility title, sitting around the middle of Hacksaw’s 1–5 scale, so you can expect a mixture of frequent small clusters and occasional bigger spikes when multipliers line up.
Does Double Rainbow Use Paylines Or Cluster Pays?
The slot doesn’t use paylines at all; instead it relies on Cluster Pays, where any group of five or more matching symbols touching horizontally or vertically creates a win, helped along by cascades.
What Is The Maximum Win Potential In Double Rainbow?
The maximum possible win is capped at 5,000x your stake, achieved when a large cluster hits into several boosted reels, potentially under a Full Rainbow multiplier on top. Once that cap is reached, the game stops counting further gains for that spin.
What Is The Difference Between A Normal Cloud And A Double Rainbow Cloud?
A Normal Cloud activates its reel, assigns a colour, adds a random multiplier and grants one extra spin with existing reels locked in. A Double Rainbow Cloud instead adds its multiplier to all active reels and awards three extra spins, making it far more powerful when you already have several reels lit.
Can I Play Double Rainbow For Free?
Yes, many casinos and slot sites offer a demo mode where you can spin Double Rainbow with play money. The demo uses the same rules, hit rate and feature behaviour as the paid version, so it’s an ideal way to learn the slot before risking real funds.
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