Sunny Stacks Slot
Get 100 Free Spins when You Bet £20
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Type of Slot
Theme
Reels
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Stakes Range
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Free Spins
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Sunny Stacks Demo
Recommended Casino
3,000+
Up to 24 hours-
United Kingdom (UKGC)
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Sunny Stacks Slot RTP, Details & Wager Limits
When you play the Sunny Stacks slot, you’ll instantly notice it takes a different approach to typical video slots. Instead of a typical 5×3 layout, there’s a 6×5 grid. You won’t find paylines here either, it creates wins when a cluster of at least 9 symbols lands. It makes for a more fun experience with some exciting spins.
While researching this Sunny Stacks review, I found a stake range between 20p and £30. It’s a smaller range, so it might not appeal to high-rollers, but everyone can find something they enjoy. You can change the stakes using the coin stack button on the right, so choosing the stake you want is straightforward. There are autospin and turbo-spin buttons, but the top UK casino sites don’t allow UK players to use these controls.
The Sunny Stacks RTP is 94.5%, slightly below the industry standard. However, the medium volatility ensures payouts come along quite often. There is a bonus buy option, but it’s unavailable to UK players, so you’ll need to manually trigger it if you’re playing in the UK.
You can grab a Sunny Stacks max win of up to 5,000x the stake. It’s challenging to claim, as it’s only possible during the free spins round. The best I managed in the Sunny Stacks demo was 350x my stake in the bonus round. I didn’t try to gamble my spins or multipliers, though, so it’s possible to hit higher payouts if you successfully gamble here.
Theme: Skywind Makes It Feel Hot With Sunny Stacks
Sunny Stacks takes you on a journey to the beach to enjoy the summer. It uses simplistic but well-drawn graphics. Each symbol has a cartoon style, but there’s plenty of detail, ensuring it’s easy to see what each icon is supposed to be. Skywind has made sure you’ll be fully immersed in what’s on the screen. I’m a fan of this kind of visual. While I like realistic visuals, it’s nice to see something fun and vibrant, too.
The sounds match the theme perfectly, with an upbeat theme and bright sound effects throughout. When you load up at Sunny Stacks casinos you’re sure to have a smile on your face. As it’s a summer-themed game, everything is extremely colourful, matching expectations.
The blue fish pays out the most, with up to 750x the stake available for 33-34 in a cluster.
| Symbol | Payout |
|---|---|
 Conch | 9 to 34 = 0.5 to 75x the stake |
 Purple Shell | 9 to 34 = 0.5 to 75x the stake |
 Green Shell | 9 to 34 = 0.75 to 125x the stake |
 Starfish | 9 to 34 = 0.75 to 125x the stake |
 Crab | 9 to 34 = 1 to 250x the stake |
 Orange Fish | 9 to 34 = 1 to 250x the stake |
 Blue Fish | 9 to 34 = 1.5 to 750x the stake |
 Wild | N/A |
 Scatter | N/A |
Sunny Stacks Mobile
The Sunny Stacks mobile slot retains everything from the desktop version. The controls are the same, although the game moves them to the bottom of the screen in portrait mode. It’s highly responsive, so you won’t be let down playing at a mobile casino. Skywind has done a superb job of converting between platforms.
Sunny Stacks Bonus Features
There are two bonus features included in the Sunny Stacks slot game. However, they’re packed full of extras, ensuring it’s plenty of fun and highly entertaining.
Sunny Respins
On every spin, a random symbol appears at the top of the screen. The symbol is a 2×2 symbol and can link to symbols landing on the reels below it. If a win lands using this symbol, it triggers a Sunny Respin. All winning symbols become sticky, and the reels respin. Any new winning symbols that land will become sticky if they’re part of the cluster. The respins continue until no new symbols appear.
Free Spins
The free spins round begins when you land at least three scatter symbols on the reels. Three to six symbols awards 8 to 14 spins. After the scatters appear, you have the opportunity to gamble to increase your spins or multiplier. If you choose to gamble, it begins a mini-game where a wheel spins. If it lands on green, you win, and it increases the aspect you chose. If it lands on red, you lose and don’t get any spins at all.
During the free spins round, all wins trigger Sunny Respins. Because the symbol at the top is wild, it makes wins more likely and increases their size. The respins continue until no new winning symbols are added to the cluster. After the second respin, there’s the opportunity for the multiplier to increase by between 1 and 3. It can move to a maximum of 50, making for some impressive wins during this round. When the respins end, the multiplier resets to its original value.
If you land three or more scatters during the bonus, it retriggers the spins and adds them to your total.
Sunny Stacks Verdict: Fun in the Sun with Sunny Stacks
Sunny Stacks is a fun-filled slot with some interesting features. Although there are areas for improvement, there’s still plenty to enjoy here.
The bonus features in Sunny Stacks are the most impressive aspect. Offering multipliers of up to 50x in the free spins can turn small wins into huge ones. Although the top payout is capped at 5,000x, it’s a good max win for a medium volatility game. Cluster pays are always a fun mechanic, and Sunny Stacks uses them to great effect. A score of 4/5 means this is a solid game that’s well worth a try, but it’s not quite on the same level as the best slots on the market.
Sunny Stacks FAQs
Sunny Stacks has an RTP of 94.5%. It’s slightly below the average for the market, which is a little disappointing.
The maximum win you can claim in Sunny Stacks is 5,000x your stake.
Yes, Sunny Stacks features a $1. It awards between 8 and 14 spins, and there is the potential to re-trigger the spins.
You can load up the $1 on this review page. It allows you to try out the game without spending any of your bankroll.
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Will is a seasoned writer with extensive experience in the iGaming industry. His expertise in slots and sports betting allows him to craft work that takes readers on an engaging journey through any topic. With a keen eye for detail, he provides intricate insights into slots, making him a leading voice in the iGaming sphere.
