Oxygen 2 Slot
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Oxygen 2 Demo
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3,000+
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United Kingdom (UKGC)
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Oxygen 2 Slot RTP, Details & Wager Limits
Like the original release in this series, the Oxygen 2 slot game plays out on a 6-reel, 7-row, cluster pays machine. Create winners by landing clusters of 5 or more matching symbols. When a winning cluster hits, the successful symbols are blasted from the screen and replaced by new ones. If a new winning cluster lands, the process is repeated.
You can join the action at many of the best UK slot sites at bet levels between 20p and £100 per spin. If you’re in an area where this feature is allowed, you can set up to 100 auto spins or ramp up the pace with turbo mode. Neither of these is available to players in the UK, though.
The Oxygen 2 RTP of 94% is typical of a slot from ELK Studios. That return-to-player rate is below average and a good distance behind the highest RTP slots. What does stack up well is the Oxygen 2 max win of 25,000x. Excluding the big progressive jackpot slots, that’s a pretty impressive figure compared to those in many online slots we see nowadays.
The Oxygen 2 volatility is high, coming in at 8/10. The game has a hit rate of 29.4%, so on average, a winner hits every 3.4 spins.
Oxygen 2 Theme—Hunting for Riches on the Ocean Floor
Just like in the predecessor slot, the seabed is the setting for Oxygen 2. There’s a bit more of an industrial feel to the design here, though, as the aquatic creatures have merged with metal and developed machine-like qualities.
Joining the 3 lower-value buoy symbols are a sea snail, crab, fish, and squid, each with their own metallic embellishments. Also, look out for oxygen, jellyfish, and octopus symbols, which can deliver multipliers, and the mine, which serves as the wild. The treasure chest is the bonus symbol which can trigger the free spins feature.
I liked what ELK has done with the design here. The visuals have a similar style to the original Oxygen slot, but it’s all just that little bit sharper. The soundtrack is pretty generic but is a decent enough fit. It certainly didn’t have me looking for the mute button, at least.
The design choices overall are all pretty good when lined up alongside many new slots. As usual for an ELK-powered slot, this is a feast for the senses.
Here’s what the paytable looks like:
| Symbol | Payouts/Info |
|---|---|
 Green Buoy | 5–16+ = 0.1 to 10x |
 Orange Buoy | 5–16+ = 0.15 to 15x |
 Pink Buoy | 5–16+ = 0.2 to 20x |
 Sea Snail | 5–16+ = 0.3 to 25x |
 Crab | 5–16+ = 0.4 to 30x |
 Fish | 5–16+ = 0.5 to 50x |
 Octopus | 5–16+ = 1 to 100x |
 Wild | Substitutes for the symbols above |
 Scatter | 3+ trigger the free spins rounds |
Oxygen 2 Mobile Slot
The Oxygen 2 mobile slot has been fully optimized for play on tablets and smartphones at a host of mobile casinos. ELK has done a nice job here, too. The gameplay is super smooth, and the sharp visuals impress even if you’re using a device with a small screen. Both portrait and landscape modes offer a terrific gaming experience.
Oxygen 2 Bonus Features
Multipliers and free spins are the main attractions when it comes to the features you’ll rely on when playing at Oxygen 2 casinos. Don’t forget to look out for colossal symbols and wild extras.
Try the Oxygen 2 demo for free first if you can. It’s one of thousands of free demo slots here at Online-Slot.co.uk.
Blaster Wilds and Exploding Wilds
When Blaster Wilds land, they spread in either a + shape or an X shape and turn multiple symbols into wilds. A payout calculation is made with the new wilds in place.
Exploding Wilds remove symbols from within a pair of cone shape areas up and down or left and right of itself.
Multipliers
When a winning cluster hits for the first time, oxygen bubbles can be added to the vacated symbol positions. These bubbles come with multipliers attached. The value of the multiplier doubles with subsequent wins and can get as high as 2,048x the bet!
Look out for the Jellyfish symbol. It can appear at random positions on the grid and increase the value of the multiplier.
Land a winner on a position that contains an Octopus symbol, and the value of the multipliers increases to deliver an even bigger payout.
Big Symbols
Most of the time, symbols appear as standard singles. However, they can also appear as 2×2, 3×3, and even as 4×4 colossal symbols. Bigger symbols have the potential to deliver the big multipliers.
Free Spins
Land 3 treasure chest bonus symbols on the same spin, and you’ll receive 10 free games. Any multipliers that land during this round are persistent and don’t reset with each new spin as they do in the base game. An octopus symbol will appear on each free spin to deliver more multiplier magic.
Land 2 or 3 additional scatters, and another 3 or 5 free spins are awarded. Land 4 scatters, and you’ll receive 7 extra free drops in addition to an upgrade to the Super Bonus Game.
Super Free Spins
You’ll need 4 treasure chest bonus symbols to trigger the enhanced free drops round. Once again, 10 free spins are up for grabs. In this round, the Jellyfish feature triggers on each free spin. Re-triggers are possible here, too.
X-iter™ (Not Available at UK Online Casinos)
If you’re in a jurisdiction where it’s allowed, you can jump the queue to the feature rounds. However, this comes at a cost:
- 3x the bet: Bonus Hunt, which triples your chances of triggering the Bonus Game Free Spins.
- 10x the bet: Special Wilds with 1 spin where 3 special wilds are guaranteed to land.
- 25x the bet: Octo Strike with 1 spin where the Octopus and Multiplier Strike will hit.
- 100x the bet: Bonus Game with a guaranteed Octopus at every spin.
- 500x the bet: Super Bonus with a guaranteed Octopus and Jellyfish at every spin.
These options aren’t available to players in the United Kingdom, though.
Oxygen 2 Slot Verdict: This Underwater Trip Bubbles Along Nicely
At first glance, Oxygen 2 looks very similar to the original Oxygen. The design is instantly recognizable in both slots, while wilds, multipliers, and free games dominate the feature offering.
ELK has added some extra goodies into the bonus mix, which really takes the gameplay up a level. The octopus and jellyfish extras can really get the multipliers moving. Add the cluster pays and avalanche reels mechanic, and there’s no shortage of action.
The main downside in Oxygen 2 is the below-average 94% RTP. The plus is the 25,000x max win. It’s volatile, yes, but the variance isn’t insanely high.
The watery theme has become a hugely popular one in the world of online slots. This is a pretty good example of the genre. ELK has taken the popular original and added a few tweaks to create an even better sequel.
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Slobodan is an accomplished writer with a passion for slot games and a deep appreciation for iGaming. With years of experience reviewing the latest titles in the industry, he combines expertise in game mechanics with a genuine enthusiasm for the thrill of spinning reels, helping players make informed choices in the exciting world of online slots.
