- Smooth and seamless gameplay
- Up to three Expanded Wild Reels
- An easy game to play
- No RTP or volatility information
- No Free Spins bonus round
Contents
Introduction
There’s something very peaceful and relaxing about bubbles - who hasn’t whiled away some time happily popping bits of bubble wrap, or watching entranced as random bubbles float away from the washing up? It’s something game developers are only too well aware of, hence the number of games involving them, such as the launderette-themed Double Bubble slot.
Rather confusingly, KA Gaming has decided to call its own game Bubble Double, which means that players are bound to end up getting them mixed up. So we thought we’d better try this new offering to see how it shapes up.
Theme, Graphics & Soundtrack
Bubble Double sounds as though is should be filed away in our cartoon themed slots section, but it’s actually a fruit-based game. For some reason known only to the team at KA Gaming, they decided to make this a retro-themed fruit game, in which every piece of fruit is encased in bubbles. Each bubble is tinted the color of the fruit inside, which makes for quite a colorful game, with blueberries, watermelons, pineapples and even starfruit putting in an appearance. The bubbles are nicely highlighted, and they bounce slightly as they land, which is quite relaxing to watch.
The pieces of fruit only escape from the bubbles when they feature in a winning combination with a wild multiplier, which gives an exciting effect. And there’s a happy soundtrack to accompany gameplay, with gentle, synthesised tunes that add to the fun.

Bubble Double RTP & Volatility
At the time of writing our review, KA Gaming had yet to publish the full game details, so we don’t know anything about its RTP or volatility. We do know that KA Gaming slots usually have an RTP that meets or exceeds the industry average. However, without any volatility information, we can’t recommend you play Bubble Double with real cash at an online casino.
But don’t worry! Bubble Double is just one of the KA Gaming online slots that we have available for you to play right here on our site. And you can explore it completely free of charge, so it’s the perfect opportunity to try it out and see how far your own bankroll could take you in an online casino.
How to Play Bubble Double
Like all KA Gaming slots, Bubble Double is really easy to play, with clear and intuitive controls.
1 Tap on the New Bet button which will call up your entire range of wagering options. Tap on your choice or use the ‘+’ and ‘-‘ buttons to make your selection.
2 High rollers should head straight for the Max Bet button to play the game to maximum stakes.
3 When you’re ready to play, tap once on the Spin button and wait to see where the symbols land.
4 Tap the ‘I’ button to view the game’s rules and the paytable. The paytable is dynamic, so it shows the actual amounts you could win for each combination.
5 The three-line menu takes you to the sound settings and game history.
Bet Sizes & Paytable Wins
Play Bubble Double from 0.40 to 200.00 per spin. Matching up three, four or five symbols on adjacent reels starting from the left results in cash payouts. The amounts you’ll win are shown as multiples of your total stake.
Watermelon = 0.05x, 0.07x, 0.25x
Plum = 0.1x, 0.12x, 0.25x
Peach = 0.12x, 0.25x, 0.5x
Starfruit = 0.12, 0.25x, 0.62x
Kiwi fruit = 0.25x, 0.5x, 1x
Blueberry = 0.25x, 1x, 2.5x
Pineapple = 0.62x, 1.87x, 3.12x
Bubble Double Bonus Features
The multicolored W is the game’s wild symbol. It only appears on reels 2, 3 and 4 so it can’t generate any wins of its own - symbols have to appear on reel 1 to start any winning combination. But this wild expands on the reel to cover all three positions, creating a Stacked Wild Reel with every appearance.
And it gets even better! Every wild comes with a 2x multiplier, and where two or three Wild Reels land, the multipliers are added together. That can lead to some big cash payouts if you’re playing for real money.
Although Bubble Double paylines operate from left to right, there’s one exception. Where Stacked Wild Reels occur on reels 2, 3 and 4 simultaneously, the game will also pay out wins from right to left. This won’t happen for five-of-a-kind wins though, which only ever pay out one way.
Overall Review
We didn’t have particularly high expectations of Bubble Double when we first started playing. Although the graphics are nice to look at and the soundtrack is perfectly pleasant, the gameplay itself seemed quite lacklustre. And sure enough, it wasn’t too long before our balance was dwindling away in spite of fairly regular wins. Take a look at the paytable and you’ll see that the rewards are really very low - you have to climb five symbols up the paytable and then hit five of a kind to even win back your stake!
But we persevered, and soon we were landing the Expanding Wild Reels feature. When it lands on reel 4, it’s unlikely to generate a win, but on reel 2 there’s a very good chance that it could generate multiple wins with each spin. Thanks to the Winning Ways mechanic, the Win Multipliers combine to create some very big payouts. This definitely isn’t a game for low-risk players - although everyone can enjoy playing it in demo mode with no financial risk at all.
So is this game a better bet than Double Bubble? Overall, we’d have to say not, but try them both yourself and let us know if you disagree!
Disclaimer: Bubble Double (KA Gaming) trademark / license is owned by KA Gaming. This site is not endorsed by KA Gaming.
| Slot Name: | Bubble Double (KA Gaming) |
|---|---|
| Software: | KA Gaming |
| RTP: | Not Applicable |
| Paylines: | 243 |
| Reels: | 5 |
| Min Bet (all lines covered): | $0.40 (USD) |
| Max Bet: | $200 (USD) |
| Top Win: | 250000 |
| Features: | Wild Symbol, Multiplier, 5 Reels |
| Themes: | Space |
| Last Update: | 30/10/2020 |
FAQs
What is the RTP and volatility of Bubble Double?
KA Gaming hasn’t yet published this information.
Does Bubble Double have free spins?
There’s no free spins bonus in Bubble Double.
What is the top-paying symbol in Bubble Double?
Five-of-a-kind pineapples pay out 3.12x your stake, but if you land three Wild Expanded Reels with accompanying multipliers in the combination, that amount will be multiplied 18x.
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